Theoretical design of the dipole cesiumbeam tube is discussed.
本文讨论了二极型密封铯束管的理论设计。
2
As a result of these test runs, the cesiumbeam became the standard for international time.
最终，这些测试使得铯束成为国际时间的标准。
3
A portable laser system, continually working for very long period, is the key part in realization of an optically pumped cesiumbeam frequency standard.