“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	Code of Conduct on Responsible Fisheries Code of Conduct on the Safety and Security of Radioactive Sources Code of Corporate Governance for Listed Companies code of environmental law code of ethics Code of Ethics for Art Museum Directors code of ethics for certified public accountants Code of Ethics for Chinese Cultural Heritage and Museum Workers Code of Ethics for Librarians of Japan Code of Ethics for Museums Code of Ethics of the American Library Association Code of Ethics or The Canons of Journalism code of foreign distribution code of geological investigation for levee project Code of Gia Long Code of Great Ming Dynasty Code of Hammurabi Code of Northern Qi Dynasty Code of Practice code of practice for registration and approval of medical devices Code of Professional Conduct for Journalists Code of Professional Ethics for Teachers in Colleges and Universities code of textile standard code of traffic violation behavior Code of Ur-Nammu

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