cavityfrequency meter

例句：

1. 1.The cavity frequency meter was used to measure the resonance frequency of the cavity.
   腔室频率计被用来测量腔室的共振频率。
2. 2. The cavity frequency meter was used to monitor the temperature inside the cavity.
   腔室频率计被用来监测腔室内的温度。
3. 3. The cavity frequency meter was used to detect any changes in the resonant frequency of the cavity.
   腔室频率计被用来检测腔室的共振频率的任何变化。