Phase difference measuring

• 相位差测量

Phase difference measuring的用法和样例：

例句

1. A frequency tracking method is proposed.The synchronism sampling is achieved to improve the measuring precision of frequency and phase difference.
   本文提出一种频率跟踪方法，可以在不过零开始采样的情况下，实现整周期采样，保证频率和相位差测量的精度。