working temperature,工作温度

World Factory Instrumentation Protocol;World FIP,World FIP总线（世界工厂仪表协议）

world model,全球模型；世界模型

wound primary type current transformer,绕线式电流互感器

write,写

writing speed,记录速度

x-radiation thickness meter,x射线厚度计

X-ray,X射线；伦琴射线；X光

X-ray absorption spectrometer,X射线吸收式光谱仪

X-ray analysis,X射线分析法

X-ray analyzer,X射线分析器

X-ray apparatus for structure analysis,结构分析用X射线分析

X-ray beam stop,X射线光束截捕器

X-ray cinematography,X射线电影摄像法

X-ray controller,X射线控制器

X-ray crystal spectrometer,X射线晶体光谱仪

X-ray detector,X射线探测器

X-ray diffraction analysis,X射线衍射分析法

X-ray diffractometer,X射线衍射仪

X-ray energy dispersive spectrometr,X-射线能量分散谱仪

X-ray energy spectrometr,X射线能谱仪

X-ray filter,X射线过滤器

X-ray fluoremetry logger,X射线荧光测井仪

X-ray fluoresce readout analyser,X射线荧光直读分析仪

X-ray fluorescence analysis,X射线荧光分析法

X-ray fluorescent emission spectrometer,X射线荧光发射光谱仪

X-ray fluorimeter,X射线荧光仪

X-ray fluorimeter in borehole,井下X射线荧光仪

X-ray goniometer,X射线测角仪

X-ray high voltage generator,X射线高压发生器

X-ray intensity,X射线强度

X-ray monochromator,X射线单色器

X-ray photo-electron spectrometer (XPS),X射线光电子能谱仪

X-ray photo electron spectroscopy (XPS),X射线光电子能谱法

X-ray powder diffractometer,X射线粉末衍射仪

X-ray spectrograph,X射线摄谱仪

X-ray spectrometer,X射线光谱仪

X-ray spectrometer arrangement,X射线分光装置

X-ray spectrum,X射线光谱

X-ray television apparatus for industry,工业X射线电视装置

X-ray transducer [sensor],X射线传感器

X-ray tube,X射线管

X-ray tube current,X射线管电流

X-ray tube head,X射线管头

X-ray tube rating charts,X射线管负荷特性曲线

X-ray tube shield,X射线管防护罩

X-ray tube voltage,X射线管电压

X-ray tube window,X射线管窗口

X-ray wave length dispersive spectrometer,X射线波长色散谱仪

X-Y recorder,XY记录仪

Y-modulation,Y调制角

yaw probe,偏流侧向探头

yield point,屈服点

yield strength,屈服强度

yoke,支架；磁轭

yoke method,极间法

z-domain,Z域

z-plane,Z平面

z-transfer function,Z（变换）传递函数

z-transform,Z变换

zenith distance,天顶距

zero,零点；零位

zero adjustment,调零装置

zero-based conformity,零基一致性

zero-based linearity,零基线性度

zero calibration gas,零点校准气

zero capacitance,零电容

zero displacement value,零位位移植

zero drift,零点漂移

zero elevation,零点提升

zero error,零点误差

zero inductance,零电感

zero-input response,零输入响应

zero knives linear,零刀联线

zero-length spring gravimeter,零长弹簧重力仪

zero-line oscillating,零线抖动

zero-line [reference] marker,零线装置

zero-measurand output,零输出

zero output base line,零输出基线

zero point,零点

zero-point output,零点输出

zero scale mark,零（标度）标记；零标度线

zero shift,零点迁移[偏移]

zero-state response,零状态响应

zero suppression,零点下降

zero variation,不回零位

zigzag scan,Z形扫查；锯齿形扫查

zinc oxide series gas sensor,ZnO系气敏元件

zinc oxide varistor,氧化锌电压敏电阻器

zirconia sensor,氧化锆传感器

zirconium doxide oxygen analyzer,氧化锆氧分析器