This is the basis for the well - known cesium clock, presently the standard of frequencyandtime.
这就是众所周知的铯原子钟的基础,它是目前的频率和时间基准。
2
A new tool that can test the clock base frequency error of energy measuring devices and provide GPS standardtime to calibrate real-time clock was introduced in this paper.
介绍了一种用来测量电能计量装置的时钟基频误差,并提供GPS标准时间以校准其实时时钟的新型工具。
3
The comparison table of modern practical atom clock's performance index is given. The index of transferring and comparing standardtime-frequency signal by modern radio means is also listed.