radio-frequency loss-angle technique ==> 射频损耗角技术 radio-frequency maser ==> 射频脉塞,射频微波激射器 radio-frequency mass spectrometer ==> 射频质谱仪 ..
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hydrogen maser frequency standard 氢微波激射型频率标准 ; [核] 氢激射型原子频率标准
The output frequency of ICL is obtained from the resonance condition, and the comparison is carrying out among ICL, Cyclotron Auto resonance Maser (CARM) and conventional Free Electron Laser (FEL).
由谐振条件得出了ICL的输出频率，并与回旋自谐振脉塞(CARM)和常规自由电子激光(FEL)进行了比较。
This paper describes approaches taken by the Shanghai Observatory to increase the frequency stability and operational reliability of its hydrogen maser. Performances of the new maser are given.
本文描述上海天文台为改善氢脉泽标准的频率稳定度和工作可靠性所采用的主要技术，同时给出了采用这些技术后氢脉泽的新的性能数据。
Due to its very good short-term frequency stability, hydrogen maser has been given more and more attention in time service.
氢原子钟由于其优良的短期稳定性能和较长的工作寿命因而在时间社会得到了越来越多的重视。
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