N
n-exponent,n-指数
N.T.C.thermistor,负温度系数热敏电阻器
Nansen bottle,南森采水器
Nansen opening-and-closing net,南森开团式网
narrow-band filter,窄带滤波器
narrow-band random vibration,窄带随机振动
narrow band spectrum,窄波段
national satellite,国土卫星
national standard,国家标准
natural convection,自然对流
natural electric-field method instrument,自然电场法仪器
natural environment,自然环境
natural field electro-detector,天然场电测仪
natural frequency,固有频率
natural frequency measurement,固有频率的测量
natural frequency of rotor/bearing system,转子支承系统固有频率
natural gamma spectromenter of logger,自然伽玛能谱测井仪
natural inherent frequency,自然固有频率
natural mode of vibration,固有振型
near field,近场
near infrared range(NIR)remote sensing,近红外遥感
near-optimality,近优性
nearest-neighbor,最近邻
nebulizer,雾化器
negative feedback,负反馈
negative knives linear,负刀联线
negative pressure,负压；真空
negative shock response spectrum,负冲击响应谱
negative strain,负应变
negative tempperature coefficient thermistor,负温度系数热敏电阻
nephelometer,浑浊度表
nephoscope,测云器
Nernst equation,能斯特方程
nest,嵌套
net pyrgeometer,净地球辐射表
net pyrradiometer,辐射平衡表
net radiation,净辐射；辐射平衡；辐射差额
net retention time,净保留时间
net retention volume,净保留体积
net sounder,网位仪
net terrestrial radiation,净地球辐射
network frame,网络帧
network management,网络管理
network model,网络模型
network protocol,网络协议
network technique,网络技术
neutral absorption,中性吸收
neutral filter,中性滤光片
neutral zone,中间区
neutrally buoyant float,中性浮标
Newton's fluid,牛顿流体
neutron dosimeter,牛顿流动定律
neutron dosimeter,中子剂量计
neutron logging instrument,中子测井仪
neutron fraiograghy,中子射线照相术
neutron spectromenter,中子能谱仪
neutron-gamma radiometer,中子伽玛辐射仪
Nickel-Chromium/CopperNickel thermocouple,镍铬-铜镍热电偶
Nickel-Chromium/NickelAluminium[Silicom] thermocouple，镍铬-镍铝[硅]热电偶
Nickel-Chromium-Silicom/Nickel-Silicom thermocouple,镍铬硅镍硅热电偶
Nier-Johnson geometry mass spectrometer,尼尔-约翰逊型 双聚焦质谱计
NIM bin NIM,机箱
Niskin sterile water sampler,尼斯金无菌采水器
nitrile rubber(Buna N),丁晴橡胶
nitrogen dioxide trnsfer furnace,二氧化氮转化炉
nitrogen-oxide analyzer,氮氧化物分析仪
NMR absorption band,核磁共振吸收带
NMR absorption line,核磁共振吸收线
NMR equipment,核磁共振仪
NMR line width,核磁共振线宽
no-load,空负荷
no-load test,空载试验
node,节点
noetic science,思维科学
noise,噪声
noise dose,噪声剂量
noise dose meter,噪声剂量计
noise factor,噪声系数
noise generator,噪声发生器
noise level,噪声电平
noise level analyzer,噪声级分析仪
noise prediction,噪声预估
noise room,噪声室
noise suppressing varistor,消噪电压敏电阻器
noise thermometer,噪声温度计
noise transducer [sensor],噪声传感器
nominal cartridge diameter of microphone,传声器极头公称直径
nominal characteristic,名义特性
nominal flow-rate,公称流量
nominal heat value,标定热值
nominal humidity,标称湿度
nominal operating condition,正常工作条件
nominal pressure rating,公称压力
nominal range,标称使用范围；标称量限
nominal range of use,标称使用范围
nominal size,公称通径
nominal temperature,标称温度
nominal travel,标称行程
nominal value,标称值
nominal voltage ratio,标称电压比
non-conformity,不合格
non-contact thermometry,非接触测温法
non-crystalline electrode,非晶体电极
non-delimiter byte,非定界字节
non-destructive inspection,无损探伤
non-destructive inspection machine,无损探伤机
non-dimensional [relative] velocity,无量纲[相对]速度
non-dispersive infra-red gas analyzer;NDIR gas analyzer,非色散红外线气体分析器；NDIR气体分析器
non-engineering system simulation,非工程系统仿真
non-enveloped thermistor,非密封型热敏电阻器
non-function type optic-fibre temperature transducer,非功能型光纤温度传感器
non-interacting control,无相关控制
non-interchangeable accessory,不可互换附件
non-isolated analogue input,非隔离的模拟输入
non-line conversion,非线性转换
non-linear damping,非线性阻尼
non-magnetic strain gauge,抗磁性应变计
non-Newtonian fluid,非牛顿流体
non-radioactive electron capture detector,无放射源电子捕获检测器
non-reference line imaginary real amplitude receiver,无参考线虚分量仪
non-relevant failure,非关联失效
non return magnetometer,无定向磁力仪
non rotational imaging,无旋转成象
non-selective radiator,非选择辐射体
non split stream injector,无分流进样器
non-uniformity of chart [paper] speed,纸速不均匀性
non-uniqueness,非唯一性
noncapacitive a.c.arc,非电容性交流电弧
nondeterminisitic control system,非确定性控制系统
nondeterministic model,非确定性模型
nondiffraction X-ray spectrometer,非衍射X射线光谱仪
nonequilibrium state,非平衡态
nonequilibrium system,非均衡系统
nonlinear characteristics,非线性特性
nonlinear control system,非线性控制系统
nonlinear control system theory,非线性控制系统理论
nonlinear estimation,非线性估计
nonlinear model,非线性模型
nonlinear prediction,非线性预报
nonlinear programming,非线性规划
nonlinear scale,非线性标度
nonlinear system simulation,非线性系统仿真
nonlinear vibration,非线性振动
nonlinear viscous damping,非线性粘性阻尼
nonlinearity,非线性
nonmetallic material testing machine,非金属材料试验机
nonreturn-to-zero (NRZ),不归零制
normal barometer,标准气压表
normal beam technique,垂直法
normal beam testing,垂直法
normal calomel electrode,当量甘汞电极
normal distribution,正态分布
normal flow rate,正常流量
normal modes,正态振型
normal operating conditions,正常工作条件
normal-phase liquid chromatography,正相液相色谱法
normal probe,直探头
normal station,普通站
normal stress,正应力
normal temperature strain gauge,常温应变计
normal thermometer,标准温度表
normalization method,归一法
normalization regulator,归一化调节器
normalized impedance,归一化阻抗
normalized mass spectrum,归一化质谱
normalized reactance,归一化电抗
normalized resistance,归一化电阻
normally closed solenoid valve,常关式电磁阀
normally open solenoid valve,常开式电磁阀
notch filter,节点滤波器
nozzle,喷嘴
n-th nodal unbalance,第n阶振型不平衡谐量
N-type oxide gas sensor,N型氧化物气敏元件
nuclear electric quadrupole moment resonance spectroscopy,核四极共振波谱法
Nuclear Instrument Module (NIM),核仪器模块
nuclear magnetic double resonance,核磁双共振（法）
nuclear magnetic resonance magnetometer,核磁共振磁强计
nuclear magnetic resonance spectroscopy;NMR spectroscopy,核磁共振波谱法
nuclear radiation thickness meter,核辐射厚度计
(nuclear)radiation transducer [sensor],（核）辐射式传感器
nuclei counter,计核器
nude source,裸式离子源
null measurement,指零测量
null method,零位法
null method of measurement,零位测量法；指零测量法；零差测量法
null reading method,零读法
number of degrees of freedom,自由度数
number of effective plate,有效板数
number of theoretical plate,理论板数
numeric key,数字键
numerical aperture (NA),数值孔径
numerical control,数值控制
numerical value (of a quantity),（量的）数值
nutating disc flowmeter,（章动）圆盘流量计
nutating flowmeter,章动流量计
nutrients,营养盐
nutrients analyzer for seawater,海水营养盐分析器
Nyquist plot,奈奎斯特图
O
object language,目标语言
object plane,物面
object program,目标程序
object wave,物体声束
objective evidence,客观证据
objective lens of the scanning electron microscope,扫描电子显微镜物镜
objective lens of the transmission electron microscope,透射电子显微镜物镜
oblique visibility,斜能见度
observability,可观测性；能观测性
observation and recording device,观察和记录装置
ocean bottom seismograph,海底地震仪
ocean date station,浮标站
oceanographic geological instrument,海洋地质仪器
oceanographic instrumentation,海洋仪器
oceanographic measuring system,海洋测量系统
oceanographic observation,海洋观测
oceanographic survey,海洋调查
octave,倍频程
octave(bandwidth)filter,倍频程（宽带）滤波器
octave filter set,倍频程滤波器组
odd-even check,奇偶校验
off-axis response,离轴响应
off-line,离线
off-line processing,离线处理；脱机处理
off-line system simulation,离线系统仿真
office automation (OA),办公自动化
office automation system (OAS),办公自动化系统
office information system (OIS),办公信息系统
officially recognized standard,官方认可标准
offset,静差
offset coefficient,静差系数
oil-filled enclosure (Ex o),充油外壳（Ex o）
oil-water meter,原油水分仪
omegatron mass spectrometer,回旋质谱计
omnidirectional microphone,全向传声器
on-cold column injector,冷柱头进样器
one-dimensional location,线定位；一维空间定位
on-line,在线
on-line assistence,在线帮助
on-line measurement and frequency spectrum analysis,在线测量频谱分析
on-line process gas chromatograph,在线过程气相色谱仪
on-line processing,在线处理；联机处理
on-line real-time processing,在线实时处理
on-line real-time system,联机实时系统
on-line system simulation,在线系统仿真
on-off action,通断作用
on-off controller,通断控制器
one-man atmospheric submersible,常人常压潜水器
one-third octave filter,1/3倍频程滤波器
one-turm time of output shaft,输出轴每转时间
one-way communication,单向通信
open-circuit intermediate voltage,开路中间电压
open front case with pressure relief,带泄压装置的前开式外壳
open front case without pressure relief,无泄压装置的前开式外壳
(open hole) caliper,井径仪
open-jet wind tunnel,开口式风洞
open loop,开环
open loop control,开环控制
open loop control system,开环控制系统
open loop electronic balance,开环式电子天平
open-loop frequency response,开环频率响应
open-loop gain,开环增益
open-loop gain characteristic,开环增益特性
open loop pole,开环极点
open loop process control,开环过程控制
open loop remote control system,开环遥测控制系统
open loop stabilization,开环稳定
open loop transfer function,开环传递函数
open loop voltage gain,开环电压增益
open loop zero,开环零点
open source,裸式离子源
open system,开放系统；开环系统
open system interconnection (OSI),开放系统互连
open tubular column,空心柱
opening valve time,开阀时间
operating conditions,工作条件
operating error,工作误差
operating infulence,工作条件影响
operating limits,极限工作条件
operating period,工作周期
operating pressure differential,工作压差
operating system (OS),操作系统
operating temperature range,工作温度范围
operating time,工作时间
operational amplifier,运算放大器
operational reliability,运行可靠性
operational research model,运筹学模型
operational unit,运算器
operations research,运筹学
operative limits,极限工作条件

operator,操作员
operator command,操作员命令
operator's console,操作员操纵台
operator's station,操作员站
optic fiber displacement meter,光纤式位移计
optic fiber position measuring instrument,光纤式位置测量仪
optic fiber pressure transducer,光纤压力传感器
optic fiber tachometer,光纤式转速表
optic fiber tachometric transducer,光纤式转速传感器
optical arm length,光臂长度
optical Doppler effect,光的多普勒效应
optical fiber,光导纤维
optical fiber chemical sensor,光纤化学传感器
optical fibre magnetometer,光纤磁强计
optical fiber sensor,光纤式传感器
optical(measurement)method,光测法
optical micrometer,光学测微器
optical plummet,垂准仪；光学对中器
optical pumping,magnetometer,光泵磁强计；光泵磁力仪
optical(quantity)transducer(sensor),光（学量）传感器
optical reading range,光学读数范围
optical spectrometer,光学光谱仪
optical system,光学系统
optical theodolite,光学经纬仪
optical vibrometer,光学测振仪
optical wedge micrometer,光楔测微器
optima estimation,最优估计
optimal control,最优控制
optimal control law,最优控制律
optimal control system,最优控制系统
optimal control theory,最优控制理论
optimal decision problem,最优决策问题
optimal solution,最优解
optimal strategy,最做出策略
optimality principle,最优性原理
optimization,（最）优化
optimization layer,优化层
optimization technique,最优化技术
optimum frequency,最佳频率
order,有序
order parameter,序参数
ordinary temperature thermistor,常温热敏电阻器
organic semiconductor gas transducer [sensor],有机半导体气体传感器
organic semiconductor humidity transduce [sensor],有机半导体湿度传感器
organic semiconductor thermistor,有机半导体热敏电阻器
orientation,定向
orientation control,定向控制
orifice,节流孔
orifice plate,孔板
orifice-and-plug flowmeter,锥塞式流量计
original system,原系统
originator,源发站
orthogonal distrortion,正交畸变
ortho-projector,正射投影仪
oscillating period,振荡周期
oscillator,振荡器
oscillograph,录（示）波器
oscillographic polarograph,示波极谱仪
oscilloscope,示波器
outboard rotor,外重心转子
outdoor location,户外场所
outer package,外包装
outlier,剔除值
output device,输出单元；输出设备
output equation,输出方程
output error,输出误差
output feedback,输出反馈
output fluctuation,输出波动
output force or torque stability,输出激振力或力矩的稳定性
output impedance,输出阻抗
output impedance of microphone,传声器输出阻抗
output information,输出信息
output matrix,输出矩阵
output noise,输出噪声
output prediction method,输出预估法
output shaft rotation clearance,输出轴间隙角
output shaft rotation range,输出轴转角范围
output shaft torque,输出轴转矩
output signal,输出信号
output signal "one" level,输出信号“1”电平
output signal "zero" level,输出信号“0”电平
output state,输出状态
output stem travel clearance,输出杆间隙位移
output system,输出系统
output unit,输出设备
output variable,输出变量
output vector,输出向量；输出矢量
oval gear flowmeter,椭圆齿轮流量计
oval wheel flowmeter,椭圆齿轮流量计
oven temperature,箱温
over-current protection,过电流保护
over-voltage protection,过电压保护
overall design,总体设计
overdampin,非周期阻尼；过阻尼
overflow,溢出
overflow indication,溢出指示
overlapping averages,滑动平均
overlapping event,交迭事件
overload,过载；超负荷
overload flow-rate,过载流量
over-load meter,过载仪
overpressure characteristic,超压特性
overpressure failure,超压破裂
overrange,过范围
overrange limit,过范围限
overshoot,过冲；超调量；过振比
overview panel,总貌画面
overvoltage protection varistor,过电压保护电压敏电阻器
oxide thermistor,氧化物热敏电阻器
oxygen bomb,氧弹
oxygen bomb calorimeter,氧弹式热量计
oxygen (pressure)gauge,氧压力表
oxygen regulator,氧气减压器
ozone analyzer,臭氧分析仪
ozone sonde,臭氧探空仪
ozone spectrophotometer,臭氧分光光度仪
P
P-net,P-net总线
P-scope,P型显示
P.T.C.thermistor,正温度系数热敏电阻器
p-type oxide gas sensor,P型氧化物气敏元件
P-V-T-t technique,压力-容积-温度-时间法
pack,包装件
package,包装；包装件
packaging,包装
packaging standard,包装标准
packed capillary column,真充毛细管柱
packed column,填充柱
packed-type solenoid valve,填料函型电磁阀
packet,包
packet mode,包方式
packet sequencing,包排序
packet switching,包交换
packing,包装
packing box assembly,填料函组件
packing machine (liquid chromatographic column),（液相色谱柱）装填机
packless solenoid valve,无填料函型电磁阀
page addressing,页面寻址
page printer,页式打印机
page-at-a-time printer,一次一页印刷机；页式印刷机
panel,盘；屏，画面
panel mounting (pressure) gauge,盘装压力表
panoramic exposure,周向照射；全景照射
pantograph,缩放仪
paper based strain gauge,纸基应变计
paper chromatography,纸色谱法
paper tape,纸带
paper tape punch,纸带空孔机
paper tape reader,纸带阅读机
paper tape unit,纸带单元
parachute drogue,漂流伞
parallax,视差
parallel computer,并行计算机
parallel crate controller,并行机箱控制器
parallel highway,并行信息公路
parallel operation,并行操作；并联工作
parallel output system,并行输出制
parallel plate micrometer,平板测微器
parallel processing,并行处理
parallel programming,并行程序设计
parallel transmission,并行传输
paramagnetic oxygen analyzer,顺磁式氧分析器
parameter,参数
parametric input,参量输入
parasitic echo,干扰反射波
parasitic voltage of voltage divider,分压箱寄生电压
parasol radiometer,伞式辐射计
parent-molecule ion,母分子离子
parity check,奇偶校验
partial failure,部分失效
partial immersion,thermometer,局浸温度计
partial pressure gauge (PPG)，分压强计
partial radiation thermometer,部分辐射温度计
partition chromatography,分配色谱法
partition coefficient,分配系数
partition isothem,分配等温线
part-turn electric actuator,角行程电动执行机构
Pascal,帕（斯卡）
pass-line deflection,跑偏
passing unregistered gas (PUG),漏记气体
passive remote sensing,被动遥感
passive transducer [sensor],无源传感器
path,通路
path frame,通路帧
path protocol,通路协议
path unit,通路单元
pattern,探伤图形
pattern coefficient,图型系数
pattern recognition,模式识别
peak,峰
peak area,峰面积
peak base,峰底
peak detector,峰值检波器
peak distortion,谱峰畸变
peak energy,峰能量
peak height,峰高
peak identification,谱峰鉴别
peak matching,峰匹配
peak of noise,噪声高度
peak overlap,谱峰重叠
peak point,峰顶（点）
peak separation,峰距
peak shape factor,峰形系数
peak sound pressure,峰值声压
peak stripping,谱峰剥离
peak temperature,峰温度
peak time,峰值时间
peak-to-peak value,峰峰值
peak-to-peak value of displacement,峰-峰值位移
peak (top) flatness,峰顶平直度
peak transmittance,峰值透过率
peak value,峰值
peak value of humidity,湿度峰值
peak value of temperature,温度峰值
peak voltmeter,峰值电压表
peak wavelength,峰值波长
peak width,峰宽
peak width at half height,半高峰宽
Peltier coefficient,珀尔帖系数
Peltier heat,珀尔帖热
pen,墨水笔
pen recorder,笔式记录仪
pen rising mechanism,抬笔机构
pendulum impact testing machine,摆锤式冲击试验机
pendulum meter,摆仪
pendulum striking edge,摆锤冲击刀刃
penetrameter,透度计；像质计
penetrant inspection unit,渗透液清洗剂
penetrant testing method,渗透探伤法
penetrants,渗透液
Penning gauge,冷阴极电离规；潘宁规
percentage of theoretical slope (PTS),百分理论斜率
performance,性能
performance characteristics,性能特性
performance evaluation,性能指标
periodic and random deviations(PARD),周期和随机偏差
periodic damping,周期阻尼；欠阻尼
periodic test,定期试验
periodic vibration,周期振动
periodic waves marker,周期波时标
peripheral control unit,外围设备控制器
peripheral equipment,外围设备
peripheral flow-rate,周缘流量
peripheral interface adapter(PIA),外围接口适配器
peripheral transfer,外围传送
peristaltic multi-channel pump,多通道蠕动泵
permanent flow-rate,常设流量
permanent-magnet-coil instrument,永磁动圈式[磁电系]仪表
permanent magnetic lens,永磁透镜
permanent-magnet movingcoil galvanometer,永磁动圈式[磁电系]检流计[振动子]
permeability,渗透率
permeability tube,渗透管
permeameter,磁导计
permissible cumulative discharge of standard cell,标准电池允许累计放电量
permissible discharge of standard cell,标准电池允许放电量
persistent wave NMR spectroscope,边疆波核磁共振波谱仪
personal error,人为误差
petroleum oil detection buoy system,石油探测浮标系统
pH electrode assembly,pH复合电极
pH meter,pH计
pH transducer [sensor],pH传感器
pH value,pH值
phase,相
phase analysis,相位分析
phase angle,相角
phase angle stabilization,相角稳定
phase contrast,位相衬度
phase controlled circuit breaker,断电相位控制器
phase datum mark,相位基准标记
phase detection,相位检测
phase detector,鉴相器
phase difference,相位差
phase difference torque transducer,相位差式转矩传感器
phase displacement,相位差；角误差
plase distance meter,相位式测距仪
phase indicator,相位指示器
phase lage,相位滞后
phase lead,相位超前
phase locus,相轨迹
phase margin,相位裕度
phase measurement,相位的测量
phase meter,相位表
phase modulation (PM),相位调制；调相
phase of unbalance,不平衡相位
phase plane,相平面
phase plane portrait,相平面图
phase ratio,相比率
phase reference generator,参考相位发生器
phase response,相位响应
phase sensitive detector,相敏检波器
phase sequence indicator,相序指示器
phase space,相空间
phase trajectory,相轨迹
phase transition,相变
phase variable,相变量
phase-continuous FSK,相位连续FSK
phase-crossover frequency,相位交越频率
phase-frequency characteristics,相频特性
phase-shift ultrasonic flowmeter,相移式超声流量计
phon,方（响度级的单位）
phosphorescence,磷光
photo conduction tube,光导管
photo electron spectroscopy (PES),光电子能谱法
photo-electrical coded compass,光电码罗盘
photo-electrostatic display recorder,感光静电显示记录仪
photo ionization,光电离
photo resistor,光敏电阻器
photo-sensitive recorder,感光显示记录仪
photo sensor,光敏元件
photo-theodoliti,摄影经纬仪
photoacoustic spectrometry,光声光谱法
photoconductive transducer [sensor],光导式传感器
photoelectric colorimeter,光电比色法
photoelectric comparator,光电比较仪
photoelectric effect,光电效应
photoelectric fluxmeter,光电磁通表
photoelectric length meter,光电式长度计
photoelectric position detector,光电式位置检测器
photoelectric roll gap measuring instrument,光电式辊缝测量仪
photoelectric tachometer,光电式转速表
photoelectric tachometric transducer,光电式转速传感器
photoelectric thermometer,光电温度计
photoelectric transmissometer,光电透射仪
photoelectric width meter [gauge],光电式宽度计
photoelectro magnetic element,光电磁敏元件
photoionization detector (PID),光离子化检测器
photometer,光度计

photometric linearity,光度测量线性
photomultiplier,光电倍增管
phototheodilite,摄影经纬仪；照相经纬仪
phototube,光电管
photovoltaic cell,光电池
photovoltaic transducer [sensor],光伏式传感器
physical layer (PL),物理层
physical model,物理模型
physical modeling,物理建模
physical property type transducer [sensor],物性型传感器
physical quantity transducer [sensor],物理量传感器
physical similarity,物理相似
physical simulation,物理仿真
physical symbol system,物理符号系统
physiological quantity transducer [sensor],生理量传感器
picture spectrograph,图象摄谱仪
piezoelectric acceleration transducer,压电式加速度传感器
piezoelectric effect,压电效应
piezoelectric force transducer,压电式力传感器
piezoelectric microphone,压电传声器
piezoelectric pressure transducer,压电式压力传感器
piezoelectric transducer [sensor],压电式传感器；压电换能器
piezoelectric vibrator,压电振动器
piezoelectric vibrometer,压电式振动计
piezometer ring,均压环
piezo-resistance effect,压阻效应
piezoresistive acceleration transducer,压阻式加速度传感器
piezoresistive accelerometer,压阻式加速度计
piezoresistive effect,压阻效应
piezoresistive pressure transducer,压阻式压力传感器
piezoresistive transducer [sensor],压阻式传感器
piezoresistive vibrometer,压阻式振动计
piggy-back microbiological sampler,复背式微生物采集器
pilot,先导阀
pilot valve,指挥器
pilot balloon theodolite,测风经纬仪
pilot-operated regulator,指挥器操作型自力式调节阀
pilot-operated solenoid valve,先导型电磁阀
pin-cushion distortion,枕形畸变；正畸变
pinger,水声信标
pinion,轴齿轮
pink noise,粉红噪声
pipe prover,标准体积管；管式校准器
pipe reducer,异径接管
Pirani gauge,电阻规；皮拉尼规
Pirani vacuum gauge,皮拉尼真空计
piston,活塞
piston actuator,活塞执行机构
piston-cylinder assembly,活塞部件
piston gauge,活塞式压力计
piston gauge with equilibrium liquid,带平衡液柱活塞式压力计
piston gauge with re-entrant cylinder column,反压活塞式压力计
piston prover,活塞校准器
piston rotation perdurability,活塞下降速度
piston with weight carrier,带有底盘装置的活塞
pistonphone,活塞发声器
Pitot static tube,皮托静压管
Pitot tube,皮托管
pivot galvanometer,轴尖式检流计
pivot knife-plane,支点刀座
plain glass window,防护白玻璃观察窗
planar array,平面阵
planar (quad) location,平面定位
plane bearing,平面支承
plane grating,平面光栅
plane separation,平面分离
plane separation network,平面分离电路
plane table equipment,平板仪
plane table thermoconductivity meter,行星齿轮减速器
planimeter,求积仪
plankton bucket,浮游生物网底管
plankton counting chamber,浮游生物计数框
plankton haul [trawl],浮游生物拖网
plankton net,浮游生物网
plankton pump,浮游生物泵
plankton tow net,浮游生物拖网
plankton volume indicator,浮游生物体积测量器
plant environment,工厂环境
plant growth test chamber,植物生长试验箱
plasma chromatograph-mass spectrometer (PC-MS),等离子色谱-质谱联用仪
plasma chromatography,等离子蚀刻机
plastic sampler,塑料采水器
plastic window,塑料观察窗
plasticity,塑性
plate wave,板波
plate wave technique,板波法
plateau,平台；坪
Platinum-10% Rhodium/Platinum thermocoupe,铂铑10-铂热电偶
Platinum-13% Rhodium/Platinum thermocouple,铂铑13-铂热电偶
Platinum-30% Rhodium/Platinum-6% Rhodium thermocouple,铂铑30-铂铑6热电偶
platinum resistance thermometer sensor,铂热电阻
playback apparatus,回放仪
plotter,绘图机；绘图仪；地震剖面仪
plotting tablet,标图板
plug-in unit,插件
plug valve,旋塞阀
plumb,垂直器
plunger,动铁芯
plunger pump,柱塞泵
plunger tube,隔磁管
plunger viscometer,活塞式粘度计
pluviograph,雨量计
pluvioscope,降水测定器
pneumatic actuator,气动执行机构
pneumatic bubbling gauge,补气引压式验潮仪
pneumatic control,气动控制
pneumatic limit operator,气动极限操作器
pneumatic piston gauge,气动活塞式压力计
pneumatic pump,气动泵
pneumatic rotary actuator,角行程气动执行机构
pneumatic system,气动压力系统
pneumatic thickness meter,气动厚度计
point drift,点漂
point filament,点头灯丝
point location,点定位
point-to-point connection,点对点连接
point-to-point control,点对点控制；点位控制
point-to-point control system,点到点控制系统
point to point resolution,点分辨力
point-to-point transmission,点对点传输
pointer,指针；指示字
pointer adjustment,指针调整器
pointer galvanometer,指针式检流计
pointer instrument,指针式仪表
pointer length,指针长度
pointer travel,指针转角
points of mean axial fluid velocity,平均轴向流体速度点
poise nut,平衡铊
polar aurora,极光
polar coordinate type potentiometer,极坐标式电位差计
polar plot,极线图

rated burden,额定负载
rated continuous thermal current,额定的连续热电流
rated dynamic current,额定动态电流
rated flow coefficient,额定流量系数
rated force under sinusoidal conditions,正弦态额定激振力
rated instrument limit primary current,仪表的额定极限一次电流
rated load,额定载荷
rated operating condition,正常工作条件；额定工作条件
rated operating range,额定工作范围
rated operating specification,额定工作规程
rated output,额定输出
rated primary current,额定一次电流
rated primary voltage,额定一次电压
rated range,额定范围
rated range of use,额定使用范围
rated secondary current,额定二次电流
rated secondary voltage,额定二次电压
rated short time thermal current,额定短时热电流
rated static longitudinal load,额定静态纵向负荷
rated static transverse load,额定静态横向负荷
rated transformation ratio (of a current transformer),（电流互感器的）额定变比
rated transformation ratio (of a voltage transformer),（电压互感器的）额定变比
rated travel,额定行程；标称行程
rated travel time,额定行程时间
rated tube current,额定管电流
rated tube voltage,额定管电压
rated value,额定值
rated valve capacity,阀额定容量
rated voltage factor,额定电压因数
rating attraction force,额定吸力
rating power consumption,额定功耗
rating test,标定试验
ratio chromatism,倍率色差
ratio controller,比值控制器
ratio meter,比率表
ratio of specific heat capacities,比热比
ratio of the pole spacing to the bore diameter of the pole pieces,极靴的间距与孔径比
ratio station,比值操作器
ratio thermometer,比色温度计
raw spectra,原谱
rawinsonde,无线电测风探空仪
reachability,可达性；能达性
reachable set,可达集；能达集
reachable state,可达状态；能达状态
reaction gas,反应气
reaction gas chromatography,反应气相色谱法
reaction interval,反应区间；反应程
reaction wheel,反作用轮
reaction wheel control,反作用轮控制
reactive energy meter[varhour meter],无功电度表[乏时计]
reactive powermeter,无功功率表
read,读
read-only memory(ROM),只读存储器
read-only storage,只读存储器
readability,易读性；可读度；读数精度
reading bridge,读数电桥
reading strain,应变读数
readjustments,重调
readout time,读出时间
real gas critical flow coefficient,真实气体临界流量系数
real-aperture side-looking airborne radar,实孔径侧视雷达
real image,实象
real strain,真实应变
real time,实时
real time analysis,实时分析
real time analyzer,实时分析仪
real-time clock,实时时钟
real time control,实时控制
real-time control system,实时控制系统
real time date processing,实时数据处理
real time expert system,实时专家系统
real time input,实时输入
real time output,实时输出
real time remote control,实时遥控
real time simulation,实时仿真
real time simulation algorithm,实时仿真算法
real time system,实时系统
real time telemetry,实时遥测
real-time trend panel,实时趋势画面
realizability,可实现性；能实现性
realization of international temperature scale,国际温标的复现
rearrangedmolecular ion,重排分子离子
rearrangement ion,重排离子
receiver element,接收器元件
recessed bearing,槽形支承
reciprocal linear dispersion,倒数线色散
reciprocating piston flowmeter,簇复活塞式流量计
reciprocating pump,往复泵
reciprocity calibration,互易法校准
recombination type transducer [sensor],复合型传感器
record,记录
recorder,记录仪
recording,记录
recording anemometer,风速计
recording chart,记录纸
recording clock,自记钟
recording device,记录装置
recording instrument,自记仪器
recording(measuring)instrument,记录（测量）仪器
recording medium,记录介质
recording snow-gauge,自记雪量计
recording sync,记录同步
recording theodolite,自记经纬仪
recovery time,恢复时间
rectangular coordinate type potentiometer,直角坐标式电位差计
rectifier,整流器；纠正仪
rectifier instrument,整流式仪表
rectilinear ordinates recording instrument,直线坐标记录仪
rectilinear vibration,直线振动
recursive estimation,递推估计
recycle chromatography,循环色谱法
redox electrode assembly,氧化还原复合电极
redox potential meter,氧化-还原电位测定仪
reduced capacity trim,低容量阀内件
reduced model,降阶模型
reduced order observer,降阶观测器
reduced viscosity,还原粘度
reducing plane table equipment,归算平板仪
reduction of area,断面收缩率
reduction of length,缩短率
redundancy computer system,冗余计算机系统
redundancy unit,冗余单元；冗余设备
redundant information,冗余信息
reentry control,再入控制
reference block [specimen],比较试块；对比试块；参考试块
reference chart,参比记录纸
reference coil,参考线圈；基准线圈
reference column,参比柱
reference condition,参比条件
reference electrode,参比电极
reference holder,参比物支持器；参比器

reference junction,参比端
reference junciton error(of thermocouple),（热电偶的）参比端误差
(reference junction temperture) compensator,（参比端温度）补偿器
reference line,参比线
reference load calibrating machine,基准测力机
reference material,参比物质
reference model,参考模型
reference operating condition,参比工作条件
reference performance characteristice,参比性能特性
reference pressure,参比压力
reference range,参比范围
reference sample,参比试样
reference signal,参比信号
reference sound intensity,参考声强
reference sound power,参考声功率
rdference sound pressure,参考声压
reference source,参比源
reference standard,参比[考]标准（器）
reference table (of thermocouple),（热电偶的）分度表
reference test pieces,对比试块
reference value,参比值
reference-value method,参比值法
reference-value scale(of a quantity or property),（量或特性）参比值标度
reference variable,参比变量
reference voltage,基准电压
reference wave,参考声束
reflected wave,反射波；回波
reflecting sketchmaster,反光转绘仪
reflection electron microscope,反射电子显微镜
reflection grating,反射光栅
reflection method,脉冲反射法
reflection nephoscope,反射测云器
reflective optic tachometric transducer,反光式转速传感器
reflectometer,反射表
reflector path,外光路
refracting telescope,折射望远镜
refractive humidity transducer [sensor],折射式湿度传感器
refractometer,折射盐度计
refrigerant(pressure)gauge,致冷压力表
refrigeration,致冷
regenerative braking,回馈制动；再生制动
regional model,区域模型
register,寄存器
register(of an integrating instrument),(积分式仪表的）计度器
registered standard,注册标准
regression,回归
regular velocity distribution,规则速度分布
regulating device,调节装置
regulating unit,调节单元
regulation,法规；调节
regulator,调节器
rejection,抑制
relative aperture,相对孔径
relative error,相对误差
relative flow coefficient,相对流量系数
relative gravity surver,相对重力测量
relative humidity,相对湿度
relative (measurement) method,相对式测量法
relative precision,相对响应值
relative retention value,相对保留值
relative sensitivity coefficient,相对灵敏度系数
relative stability,相对稳定性
relative tolerance between forward and backward in indicating value,示值进回程相对误差
relative travel,相对行程
relative variation in the indicating value,示值相对变动值
relative viscosity,相对粘度
relaxation process,弛豫过程
relaxation testing machine,松弛试验机
relaxation vibration,张弛振动
relay,继动器；继电器
relay characteristics,继电（器）特性
relay control system,继电控制系统
release mechanism for plankto net,浮游生物网闭锁器
relevant failure,关联失效
relevant specification,有关规范
reliability,可靠性；可靠度
reliability assessment,可靠性评估
reliability block diagram,可靠性方框图
reliability certification,可靠性认证
reliability compliance test,可靠性试验证试验
reliability design review,可靠性设计评审
reliability determination test,可靠性测定试验
reliability evaluation,可靠性评定
reliability evaluation from demonstration data,利用验证数据的可靠性评定
reliability growth,可靠性增长
reliability improvement,可靠性改进
reliability model,可靠性模型
reliability program,可靠性计划
relief valve,释放阀
reluctive pressure transducer,磁阻式压力传感器
reluctive transducer [sensor],磁阻式传感器
remanent attraction force,残留吸力
remote command control,指令遥控
remote control,遥控
remote control command,遥控指令
remote controlled Niskin sampler,尼斯金遥控采水器
remote manipulator,遥控操作器
remote measuring meteorograph,遥测气象记录仪
remote-measuring thermohygrograph,遥测温湿记录仪
remote printing,远程打印
remote regulating,遥调
remote sensing,遥感
remote sensing instrumentation for oceanography,海洋学遥感仪器
remote sensing platform,遥感平台
remote sensing system,遥感系统
remote sensing technique of oceanography,海洋学遥感技术
remote set point adjuster,远程设定点调整器
remote terminal,远程终端设备
remote thermometer,遥测温度表
removable back plate,可拆卸的后盖板
repair rate,修复率
repair time,修复时间
repeatability,重复性
repeatability error,重复性误差
repeatability of wavelength,波长重复性
repeated impact testing machine,多次冲击试验机
repeater,转发器
repetition theodolite,复测经纬仪
replica grating,复制光栅
reply message,回答报文
report generator,报表生成程序
representation of the a.c.properties of resistor,电阻器交流特性的表示
representation unit,表示单位
reproducibility,再现性；复现性
reproducibility error,再现性误差
reproducibility of measurement,测量再[复]现性
requirement,需求
requirements analysis,需求分析
requirements specification,需求规格说明
reserve volume,储气室
reservoir,储液器
reset,复原
reset time,再调时间
residual buoyancy,剩余浮力
residual carrier,残余载波
residual current,残余电流；剩余电流
residual current transformer,剩余电流互感器
residual deflection,残余偏转
residual electromotive force of potentiometer,电位差计残余电动势
residual error,残差
residual error rate,残差率
residual inductance of resistance box,电阻箱残余电感
residual magnetic field detector,剩磁检查仪
residual magnetism,剩磁
residual method,剩磁法
residual resistance of resistance box,电阻箱残余电阻
residual standard deviation,残余标准偏差
residual unbalance,剩余不平衡量
residual variance,剩余方差
residual voltage,剩余电压
residual voltage at zero,零点残余电压
residual voltage transformer,剩余电压互感器
residual voltage winding,剩余电压绕组
resistance balance,电阻平衡
resistance box,电阻箱
resistance box with plug,插头式电阻箱
resistance box with rotary switch,旋转开关式电阻箱
resistance box with terminals,端接[钮]式电阻箱
resistance hygrometer,电阻湿度计
resistance inclinometer,电阻式井斜仪
resistance meter,电阻表
resistance psychrometer,电阻（干湿球）湿度计
resistance ratio(of resistance thermometer sensor),(热电阻的）电阻比
resistance strain gauge,电阻应变计[片]
(resistance)strain gauge drawing force and compression force transducer,（电阻）应变式拉压力传感器
(resistance) strain gauge drawing force transducer,（电阻）应变式拉力传感器
(resistance) strain gauge force transducer,（电阻）应变式力传感器
(resistance)strain gauge load cell,（电阻）应变式称重传感器
(resistance)strain gauge rolling force measuring instrument,（电阻）应变式轧制力测量仪
(resistance)strain gauge tensiometer resolution,（电阻）应变式张力计分辩力
resistance-temperature coefficient (of resistance thermometer sensor),（热电阻的）电阻温度系数
resistance thermometer detector (RTD),热电阻
resistance thermometer clement,热电阻元件
resistance thermometer sensor,热电阻

resistance thermometry,电阻测温法
resistance voltage to power supply,耐（电）压
resistance wire gauge,电阻线验潮仪
resistive moisture sensor,电阻式湿敏元件
resistive transducer [sensor],电阻式传感器
resistivity instrument,电阻率仪器
resistor caliper,电阻式井径仪
resoluting power,分辨率；
resolution,分辨力；分辨率；分离度
resolution error,分辨率误差
resolution factor,分辨力因数
resolution of strain instrument,应变仪分辨率
resolution power,分辨力
resonance,共振
resonance frequency,诺振频率
resonance method,共振法
resonance method (of measurement),诺振（测量）法
resonance technique,共振法
resonance technique,共振法
resonant vibrator,共振振动器
resonator pressure transducer,谐振式压力传感器
resonator transducer [sensor],谐振式传感器
resource allocation,资源分配
resource coordination,资源协调
resource optimization,资源优化
respiratory flow transducer [sensor],呼吸流量传感器
respiratory frequency transducer [sensor],呼吸频率传感器
responder,响应站
response,响应；响应值
response characteristic,响应特性
response curve,响应曲线
response speed,响应速度
response time,响应时间
restoring torque,反作用力矩
restricted breathing enclosure,限制通气外壳
restrictor,限流器
result of a measurement,测量结果
resultant magnetization,复合磁化
retard (pressure) gauge,缓行压力表
retention index,保留指数
retention time,保留时间
retention volume,保留体积
reticule,刻度板
return control,返回控制
return-flow wind tunnel,回流式风洞
return spring,复位弹簧
return-to-zero (RZ),归零制
reverberant field,混响声场
reverberation room,混响室
reverse action,反作用
reverse actuator,反作用执行机构
reverse bend tester,弯折试验机
revers osmosis method for desalination,反渗透淡化法
reverse search,逆谱库检索
reverse video,反相显示
reversed-phase column,反相柱
reversed-phase liquid chromatography,反相液相色谱法
reverser,反向器
reversing thermometer,颠倒温度表
revising method of (thermal) electromotive force,（热）电动势修正法
revisit rate,回访速率
revolution speed,转速
revolution speed check table,转速校验台
revolution speed transducer,转速传感器
Reynolds number,雷诺数
RF-presentation,射频显示；不检波显示
rhodium-iron resistance thermometer,铑铁电阻
rigid disk drive,硬磁盘机
rigid polyvinyl chloride,硬聚氯化烯
rigid rotor,刚性转子
ring balance,环秤
ring balance manometer,环秤压力计
ring-down pulse,振铃脉冲
ring network,环形网络
ring viscometer,环式粘度计
ringing frequency,自振周期
ringing period,自振周期
ripple,纹波
ripple coefficient of voltage,电压纹波系数
ripple voltage,纹波电压
rise time,上升时间
rise-time discrimination,上升时间鉴别
risk analysis,风险决策
risk evaluation,风险评价
robot,机器人
robot programming language,机器人编程语言
robot system,机器人系统
robotics,机器人学
robust control,鲁棒控制
robust controller,鲁棒控制器
robustness,鲁棒性
rock densitometer,岩石密度计
rock pression sclerometer,岩石压入硬度计
rocketsonde,火箭探空仪
Rockwell hardness number,洛氏硬度值
Rockwell hardness penetrator,洛氏硬度压头
Rockwell hardness tester,洛氏硬度计
Rockwell superficial hardness number,表面洛氏硬度值
Rockwell superficial hardness tester,表面洛氏硬度计
rod anode X-ray tube,棒阳极X射线管
rod of pendulum,摆杆
roentgen,伦琴
Roland circle,罗兰圆
roll chart [paper],卷筒式记录纸
roll-gap,辊缝
rolling chains,滚链
rolling diaphragm actuator,滚动膜片执行机构
rolling sphere viscometer,滚球式粘度计
rolling test,滚动试验
root mean square (RMS) detector,均方根检波器
Roots flowmeter,腰轮流量计
rosette sampling system,多袋采水器
"rotary"displacement meter,“旋转”排量式仪表
rotary eccentric plug valve,偏心旋转阀
rotary motion valve,角行程阀
rotary pump,机械泵
rotating beam apparatus,旋臂装置
rotating-beam ceilometer,旋转波束云高计
rotating-beam cloud height meter,旋转波整束云高计
rotating cylinder viscometer,旋转圆筒式粘度计
rotating magnetometer,旋转磁力仪
rotating [oscillating] piston flowmeter,旋转活塞流量计
rotating target X-ray tube,旋转阳极X射线管
rotating vibration generator,回转振动器
rotation magnetic field,旋转磁场
rotation magnetization,旋转磁化
rotation or vibrating coil magnetometer,旋转或振动线圈磁强计
rotational distortion,旋转畸变
rotational viscometer,旋转粘度计
rotative speed,转速
rotative speed difference,转速差
rotor,转子
rotor axis,转子轴线
rotor flow transducer [sensor],转子流量传感器
rotor gear,转子齿轮
run of wind,风程
run-of-wind anemometer,风程表
running means,滑动平均
round trip propagation time,往返传播时间
routine,例行程序
routine tese,出厂检验；例行试验
rupture pressure,破坏压力
rustpreventive packaging,防锈包装
rustproof packaging,防锈包装
Rutherford Back scattering spectroscopy;RBS spectroscopy,卢瑟福背散射谱法