空腔
cavity
空腔磁控管
cavity magnetron
空腔幅射
cavity radiation
空腔雷达
volumetric radar
空腔流
cavity flow
空腔滤波器
cavity filter
空腔调谐超外差型频率计
cavity-tuned absorption-type fr-cquency meter
空腔调谐传送型频率计
cavity-tuned heterodyne frequency meter
空腔位移
volumetric displacement
空腔谐振器
cavity oscillator; cavity resonantor; volumetric resonator
空腔谐振器频率计
cavity-resonatior frequency meter
空腔阻抗
cavity impedance
净效率
net efficiency
net efficiency
绝对效率
abslute efficiency
绝热效率
adiabatic efficiency
空气循环效率
air cycle efficiency
劳动效率
efficiency of labor
劳动效率测定
labour measurement
净化空气总管
clean air manifold
净空
headroom
clear space