This is the basis for the well - known cesiumclock, presently the standard of frequency and time.
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 cesiumclock operates by exposing cesium atoms to microwaves until they vibrate at one of their resonant frequencies and then counting the corresponding cycles as a measure of time.
Based on available frequency standards: one prototype laboratory model of cesiumclock, three hydrogen clocks and several (2-6) rubidium clocks, the SO atomic time scale has been established.