“hydrogen maser”的概念、定义、翻译、参考文献-科学参考

单词	hydrogen maser
释义	hydrogen maser Encyclopedia 工学频率标准释 hydrogen maser氢钟以氢原子基态两个超精细能级间跃迁频率为参考（频率为1.420405751786吉赫兹），通过锁定环路来锁定晶体振荡器，使晶体振荡器能够输出高稳定度和高准确度时间频率信号的原子钟。氢钟采用的工作原子为氢原子，又称氢原子频率标准（简称氢频标）、氢原子钟。 Astronomy hydrogen maser氢微波激射
随便看	school merging policy school microscope school milk program school motto school observation School of Abdominal Diagnostic Tuina School of Acu-pointing Tuina School of Aeronautics and Astronautics, Shanghai Jiaotong University School of Aeronautics and Astronautics, Sichuan University School of Aeronautics and Astronautics, Zhejiang University School of Aerospace Engineering, Xiamen University School of Aerospace Engineering, Xi'an Jiaotong University School of Aerospace Engineering，Beijing Institute of Technology School of Aerospace Engineering，Tsinghua University School of Aerospace, Transport and Manufacturing, Cranfield University School of Archaeology and Museology, Peking University School of Archaeology and Museology, Sichuan University School of Architecture and Design in Beijing Jiaotong University School of art and design Coventry university School of Arts and Communication, University of Paris III School of Arts, North China United University School of Arts, Peking University School of Art, University of Quebec, Montreal School of Bone-setting Tuina school of cold damages

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