wading rod,測流標杆

wait byte,等待字節

wake oscillator,尾流振蕩器

wall mounting (pressure) gauge,牆裝壓力表

wall (pressure) tapping,管壁取壓口

wall-coated open-tubular column;WCOT column,涂壁空心柱

warm-up period,預熱期

warm-up time,預熱時間

washing station,清洗裝置

watchdog timer,監視時鐘

water colour,水色

water equivalent of snow,雪水當量

water gauge level,水尺高程

water meters,水表

water quality analyzer,水質分析儀

water quality indicator buoy,水質監測浮標

water quality monitoring system,水質監測系統

water spray test,噴淋試驗

water vapour,水汽

water vapour proof packaging,防潮包裝

water washable dye penetrant testing method,水洗性著色滲透探傷法

water washable fluorescent penerant testing method,水洗性熒光滲透探傷法

water washable penetrant,水洗性滲透液；自乳化性滲透液

waterproof instrument,防水式儀器儀表

waterproof packaging,防水包裝

waterproof solenoid valve,防水型電磁閥

waterproof type strain gauge,防水應變計

watertight instrument,水密式儀器儀表

watt-hour meter,瓦時計

wattmeter,功率表

wave,波浪；波

wave direction,波向

wave form display type shallow-layer seismograph,波形表示型淺層地震儀

wave generator,造波机

wave guide,波導管

wave height,波高

wave observation,波浪觀測

wave period,波周期

wave shape,波型

wave spectrogram,波譜圖

wave spectroscopy,波譜法

wave staff,測波杆

waveform stabilization,波形穩定

wavelength band,工作波段

wavelength dispersion,波長色散

wear-out failure,耗損失效

weather radar,天气雷達

weather resistance test,耐候試驗

weather satellite,气象衛星

wedge,楔塊

weighing cell,稱重傳感器

weighing frame [unit],稱量框架

weighing method,稱重法

weighing section [length],稱量段

weighing transducer [sensor],重量傳感器；稱重傳感器

weight,砝碼

weight carrier,底盤

weight correction value,砝碼修正值

weight indication,砝碼標稱值

weight-loaded regulator,重力型自力式調節閥

weight of measurment,測量的權

weight value of practical mass,砝碼實際質量值

weighted arithmetic mean,加權算術平均值

weighted average,加權平均值

weighted summing unit,加權加法單元

weighting factor,（加）權因子

weighting function,（加）權函數

weighting matrix,（加）權矩陣

weighting method,加權法

weighting network,計權网絡

weir type flow sensor,堰式流量傳感器

weldable strain gauge,焊接式應變計

welded bellows,焊接波紋管

welded ends,焊接連接端

welded mounting coupler,焊頭

wet bulb,濕球

wet-bulb temperature,濕球溫度

wet-bulb thermometer,濕球溫度表

wet gas meter,濕式气体表

Wheatstone bridge,惠斯登電橋

whirling pschrometer,旋轉干濕表

white noise,白噪聲

white random vibration,白隨机振動

white X-rays,白色X射線

whole machine balancing,整体平衡

wide band seismograph,寬頻帶地震儀

width meter [gauge],寬度計

width of acoustic emission event,聲發射事件寬度

width standard plate,寬度標准樣板

Wien velocity filter,維恩速度過濾器

Winchester disk drive,溫盤机

wind cup,風杯

wind direction,風向

wind force,風力

wind force scale,風級

wind mill anemometer,葉輪式風速表

wind pressure,風壓

wind run,風程

wind sleeve,風（向）袋

wind sock,風（向）袋

wind speed,風速

wind speed distribution,風速分布

wind speed of test point,測試點風速

wind tunnel,風洞

wind vane,風向標

wind vave,風浪

windfindinradar,測風雷達

window,觀察窗；窗口

window function,窗口函數

windowing,開窗口

windshield,防風罩

wire angle indicator,（鋼絲繩）傾角器

wire frame,全幀顯示方式

wire printer,針式打印机

wire strain gauge,絲式應變計

wire torsion tester,線材扭轉試驗机

wire type transducer,絲式傳感器

wiresonde,系留探空儀

wobbler,搖擺調焦器

Woltmann water meter,螺翼式水表

word,字

word length,字長

work file,工作文卷

work station,工作站

work station for computer aided design,計算机輔助設計工作站

working chamber,工作室

working conditions,工作條件

working pressure,工作壓力

working resolution,工作分辨率

working sensitivity,工作靈敏度

working space,工作空間

working standard,工作標准器

working temperature,工作溫度

World Factory Instrumentation Protocol;World FIP,World FIP總線（世界工厂儀表協議）

world model,全球模型；世界模型

wound primary type current transformer,繞線式電流互感器

write,寫