attenuation,衰减

attenuation coefficient,衰减系数

attenuation length,衰减长度

attenuator,衰减器

attitude,姿态

attitude transducer[sensor],姿态传感器

audio monitor,监听器

audio-frequency spectrometer,声频频谱仪

audit,审核

Auger electron energy spectrometer(AEES),俄歇电子能谱仪

Auger electron image,俄歇电子象

Auger electron spectrometer,俄歇电子能谱仪

Auger electron spectroscopy(AES),俄歇电子能谱法

aurora,极光

auto-compensation logging instrument,电子自动测井仪

auto-compound current transformer,自耦式混合绕组电流互感器

auto-polarization compensator,自动极化补偿器

autocorrelation function,自相关函数

automatic a.c.,d.c.B-H curve tracer,交、直流磁特性自动记录装置

automatic balancing machine,自动平衡机

automatic control,自动控制

automatic control souce of vacuum,真空自动控制电源

automatic control system,自动控制系统

automatic data processing,自动数据处理

automatic exposure device,自动曝光装置

automatic feeder for brine,盐水溶液自动补给器

automatic focus and stigmator,自动调焦和消象散装置

automatic level,自动安平水准仪

automatic levelling compensator,视轴安平补偿器

automatic/manual station;A/M station,自动/手动操作器

automatic programming,自动程度设计

automatic radio wind wane and anemometer,无线电自动风向风速仪

automatic railway weigh bridge,电子轨道衡

automatic scanning,自动扫查

automatic spring pipette,自动弹簧式吸液管

automatic testing machine,自动试验机

automatic titrator,自动滴定仪

automatic tracking,自动跟踪

automatic vertical index,竖直度盘指标补偿器

automatic weather station,自动气象站

automation,自动化

automaton,自动机

auxiliary attachment,辅件

auxiliary controller bus(ACB),辅助控制器总线

auxiliary crate controller,辅助机箱控制器

auxiliary devices,辅助装置

auxiliary equipment(of potentiometer),(电位差计的）辅助设备

auxiliary gas,辅助气体

auxiliary output signal,辅助输出信号

auxiliary storage,辅助存储器

auxiliary terminal,辅助端

auxiliary type gravimeter,助动型重力仪

availability,可用性

available time,可用时间

average,平均值

average availability,平均可用度

average nominal characteristic,平均名义特性

average sound level,平均声级

average value of contarmination,污染的平均值

average wind speed,平均风速

axial clearance,轴向间隙

axial current flow method,轴向通电法

axial load,轴向载荷

axial sensitivity,轴向灵敏度

axial vibration,轴向振动

axis of rotation,摆轴；旋转轴

axix of strain gauge,应变计[片]轴线

B-scope,B型显示

back flushing,反吹

background,后台，背景，本底

background current,基流

background mass spectrum,本底质谱

background noise,背景噪声

background processing,后台处理

background program,后台程度

Backman thermometer,贝克曼温度计

backscattered electron image,背散射电子象

backward channel,反向信道

baffle wall,隔板

balance,天平

balance for measuring amount of precipitation,水量秤

balance output,对称输出

balance quality of rotor,转子平衡精度

balance wieght,平衡块

balanced plug,平衡型阀芯

balancing,平衡

balancing machine sensitivity,平衡机灵敏度

balancing machine,平衡机

balancing speed,平衡转速

ball pneumatic dead wieght tester,浮球压力计

ball screw assembly,滚珠丝杠副

ball valve,球阀

ballistic galvanometer,冲击栓流计

band,频带

bandwidth,带宽

band width of video amplifier,视频放大器频宽

bar primary bushing type current transformer,棒形电流互感器

barograph,气压计