时间频率计量 meaning in English
metrology of time and frequency
Examples
- Verification system of time and frequency measuring instruments
时间频率计量器具检定系统 - If topic # 1 is not presented , this proposed seminar could include a brief overview of the fundamentals of time and frequency metrology and standards as in # 1 , before focusing in more depth on practical metrology
如果上一专题未宣讲，应先做一个时间频率计量学基础的简要介绍，然后才可以着眼与深入的实践计量学。