空腔谐振器
cavity oscillator; cavity resonantor; volumetric resonator
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
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
空腔位移
volumetric displacement
空腔效率
volumetric efficiency
空腔阻抗
cavity impedance
局部谐振
loacl resonance
拉力功率计牵引测力计
tension dynamometer
静止频率
resting frequency
可编程序频率合成器
programmable frequency synthesizer
可变频率振荡器
variable frequency oscillator
可闻限下频率
subaudible frequency
刻蚀至频率
etching to frequency
空对地无线电频率
air-to-ground radio frequency