phase distance meter

例句：

1. 1. The phase difference meter is used to measure the phase difference between two signals.
   相位差测量仪用于测量两个信号之间的相位差。
2. 2.In this experiment, we used a phase difference meter to measure the phase shift of the light beam.
   在这个实验中，我们使用相位差测量仪来测量光束的相位偏移。
3. 3.The phase difference meter was used to detect the presence of interference patterns in the optical spectrum.
   相位差测量仪被用来检测光学频谱中的干涉图案存在。