要使晶体振荡器的输出信号保持原子标准所固有的频率准确度和稳定度，所用压控晶体振荡器必须具有优良的性能。
The performance of VCXO must be excellent so as to maintain the inherent frequency accuracy and stability of the atomic standard.
对我厂的频率标准X SR型铷原子频标发生的故障及具体检修情况作了较详细的分析和介绍。
Analyses failures of XSR type of Rubidium atomic frequency standard used in our factory, and introduces the situation of particular overhaul in detail.
电视信号中的标准频率信号是受原子钟控制的高稳定度、高准确度的信号。
The standard frequency in television signals is a signal with high stability and accuracy, controlled by the atomic clock.
钙原子是现代光学频率标准的一种很有前景的原子体系。
Calcium is one prospective element for the modern optical frequency standard.
钙原子是现代光学频率标准的一种很有前景的原子体系。
Calcium is one prospective element for the modern optical frequency standard.
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