Cesium Standard Solution 铯标准溶液
cesium atomic beam frequency standard 铯原子射束的频率标准 ; 铯束原子频率标准
cesium frequency standard 铯频率标准
cesium beam frequency standard 铯原子束频率标准 ; 铯束频标
long cesium beam standard 长铯束标准
short cesium beam standard 短铯束标准
cesium beam time standard 铯射束时间标准
primary cesium beam frequency standard 原级铯射束频率标准
cesium beam atomic frequency standard 铯射束原子频率标准 ; 铯束原子频率标准
This is the basis for the well - known cesium clock, 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。
National Institute of Standards and Technology researchers are developing atomic clocks based on the element ytterbium that could outclass cesium atomic clocks, which currently set the standard.
美国国家标准技术研究所的研究人员正在开发一种镱原子钟，这种原子钟可能比铯原子钟更好。目前的时间标准是由铯原子钟确定的。
As a result of these test runs, the cesium beam 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。
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