barometric correction,气壓表器差修正

barometrograph,空盒气壓計

barothermograph,气壓溫度計

barrel distortion,桶形畸變；負畸變

base,基底

base line,基線

base peak,基峰

base unit(of measurement),基本（測量）單位

baseband LAM,基帶局域网

baseline drift,基線漂移

baseline noise,基線噪聲

baseline potential,空白電位

baseline value,空白值

basic NMR frequency,基本核磁共振頻率

basic standard,基礎標准

batch control,批量控制

batch control station,批量控制站

batch inlet,分批進樣

batch of strain gauge,應變計[片]批

batch processing,成批處理

batch processing simulation,批處理仿真

Baud,波特

beam,橫梁；聲速

beam deflector,電子束偏轉器

beam path distance,聲程

beam ratio,聲束比

beam spot diameter,束斑直徑

beam-deflection ultrasonic flowmeter,聲速偏轉式超聲流量計

beam-loading thermobalance,水平式熱天平

bearing,軸承；刀承

bearing axis,軸承中心線

bdaring support,支承架

beat frequency oscillator,拍頻振蕩器

beat method(of measurement),差拍（測量）法

Beaufort scale,蒲福風級

Beckman differential thermometer,貝克曼溫度計

bed,机座

Beer' law,比爾定律

bell manometer,鐘罩壓力計

bell prover,鐘罩校准器

bellows,波紋管

bellows(pressure)gauge,波紋管壓力表

bellows seal bonnet,波紋管密封型上閥蓋

bench mark,水准點

bending strength,彎曲強度

bending vibration,彎曲振動

bent stem earth thermometer,曲管地溫表

Besson nephoscope,貝森測云器

betatron,電子回旋加速器；電子感應加速器

bezel ring,蓋環

bias voltage,偏壓

bi-directional vane,雙向風向標；雙風信標

bilateral current stabilizer,雙向穩流器

bimetallic element,雙金屬元件

bimetallic instrument,雙金屬式儀表

bimetallic temperature transducer[sensor],雙金屬溫度傳感器

bimetallic thermometer,雙金屬溫度計

binary coded decimal(BCD),二-十進制編碼

binary control,二進制控制

binary digital,二進制數字

binary elastic scattering event,雙彈性散射過程

binary elastic scattering peak,雙彈性散射峰

binary element,二進制元

binary signal,二進制信號

biomedical analyzer,生物醫學分析儀

biochemical oxygen demand (BOD)microbial transducer[sensor],微生物BOD傳感器

biochemical oxygen demand meter for seawater,海水生化需氧量測定儀

biochemical quantity transducer[sensor],生化量傳感器

biological quantity transducer[sensor],生物量傳感器

biosensor,生物傳感器

bird receiving system,吊艙接收系統

bit,比特；位

bit error rate,誤碼率

bit serial,位串行

bit-serial higgway,位串行信息公路

bivane,雙向風向標；雙風信標

black box,未知框

black light filter,透過紫外線的濾光片

black light lamp,紫外線照射裝置

blackbody,黑体

blackbody chamber,黑体腔

blackbody furnace,黑体爐

bland test,空白試驗

balzed grating,閃耀光柵

block,塊体；字塊；字組；均溫塊

block check,塊檢驗

block diagram,方塊（框）圖

block length,字塊長度

block transfer,塊傳遞

blood calcium ion transducer[sensor],血鈣傳感器

blood carbon dioxide transducer[sensor],血液二氧化碳傳感器

blood chloried ion transducer[sensor],血氯傳感器

blood electrolyte transducer[sensor],血液電解質傳感器

blood flow transducer[sensor],血流傳感器

blood gas transducer[sensor],血气傳感器

blood-group immune transducer[sensor],免疫血型傳感器

blood oxygen transducer[sensor],血氧傳感器

blood PH transducer[sensor],血液PH傳感器