heterodyne wave meter

例句：

1. 1.The engineer used a heterodyne wave meter to measure the frequency of the radio signal.
   工程师使用一个调频波测量仪来测量无线电信号的频率。
2. 2. The technician was tasked with setting up the heterodyne wave meter for the new project.
   技术员被指派为新项目设置调频波测量仪。
3. 3. The scientist conducted experiments using a heterodyne wave meter to study the properties of different materials.
   科学家使用调频波测量仪进行实验，以研究不同材料的性质。