frequency measurement by stroboscope,闪光测频

frequency measurement by vibrationg reed indicator,用舌簧频率计测频

frequency meter,频率表

frequency modulation（FM),频率周制，调频

frequency of the natural hydraulic mode,液压固有频率

frequency output,频率输出

frequency-phase characteristic,相频特性

frequency response,频率响应

frequency response characteristics,频率响应特性（图）

frequency reponse locus,频率响应轨迹图

frequency response of microphone,传声器频率响应

frequency response range,频率响应范围

frequency resonse tracer,频率响应显示仪

frequency shift keying(FSK),频移键控

frequency shift magnetometer,频移磁强计

frequency sounding instrument,频率测深仪

frequency spectra induced polarization instrument,频谱激电仪

frequency stabilization,频率稳定

frequency sweeping,频率扫描

frequency-temperature coefficient,频率—温度系数

Fresnal diffraction string,费涅尔衍射条纹

friction bezel ring,压紧盖环

friction error,轻敲位移

friction velocity,磨擦速度

front end processor,前端处理机

frontal chromatography,迎头色谱法

frost point hygrometer,霜点湿度计（表）

full bridge measurement,全桥测量

full capacity trim,全容量阀内件

full-load test,满载试验

full scale flow-rate,满标度流量

full-screen editing,全屏莫编辑

full-screen processing(FSP),全屏幕处理

full-wave logger,声波全波列测井仪

fully developed velocity distrbution,充分发展的速度分布

fully insulated current transormer,全绝缘电流互感器

fully rough trbulent flow,充分混杂紊流

function,功能

function analysis,功能分析

function block,功能块

function key,功能键

function module,功能模块

function type optic-fibre temperature transducer,功能型光纤温度传感器

functional block,功能块

functional decomposition,功能分解

functional insulation,功能绝缘

functional similarity,功能相似

functional simulation,功能仿真

fundamental frequency,基本频率

fundamental method of measurement,基础测量法

fundamental natural mode of vibration,基本固有振型

fundamental period,基本周期

fundamental wave,基波

funnel-shaped mud viscometer,漏斗式泥浆粘度计

furnace for reproduction of fixed points,定点炉

furnace for verification use,检定炉

fuzzy control,模糊控制

fuzzy controller,模糊控制器

fuzzy decision,模糊决策

fuzzy game,模糊对策

fuzzy information,模糊信息

fuzzy logic,模糊逻辑

gain,增益

gain margin,增益裕度

gain-crossover frequency,增益交越频率

galvanic cell,原电池

galvanometer,检流计

galvanometer gecord type strong-motion instrument,电流计记录式强震仪

galvanometer with optical point,光点式检流计

game theory,对策论；博弈树

gamma directioned radiometer,伽玛定向辐射仪

gamma processing image,处理象

gamma radionmeter in borehold,井中伽玛辐射仪

gamma-ray detection apparaturs,射线探伤机

gamma ray level measuring device,伽马射线液位测量装置

gamma(ray)spectrometer,伽玛能谱仪

gamma-rays,射线

gamma ray logger,伽玛测井仪

gamma sampling radiometer of banded screen,带屏伽玛取样加射仪

gamma scintillator radiometer,伽玛闪烁辐射仪

gamma spectrometer in borehold,井下伽玛能谱仪

gamma-spectrometry,伽玛测量

gas analyzer,气体分析器

gas chromatograph,气相色谱仪

gas chromatograph-mass spectrometer(GC0MS),气相色谱—质谱联用仪接口

gas chromatography,气相色谱法

gas chromatorgaphy-mass(GC-MS),气相色谱—质谱法

gas cylinder regulator,气瓶减压器

gas densitometer,气体密度计

gas-discharge source,气体放电源

gas-enclosed pressure gauge,气密引压式验尚潮仪

gas generator,气体发生器

gas laser,气体激光器

gas-liquid chromatography,气液色谱法

gas proportional detector,气体正比检测器

gas pump thermocouple,抽气式热电偶

gas purged pressure recording gauge,补气引压式验潮仪

gas sensing electrode,气敏电极