“international recommended values of standard frequencies”的概念、定义、翻译、参考文献-科学参考

单词	international recommended values of standard frequencies
释义	international recommended values of standard frequencies Encyclopedia 工学时间频率计量释 international recommended values of standard frequencies国际标准频率推荐值由国际计量委员会（CIPM）推荐的一组电磁辐射标准频率值。为包含实际复现米定义和秒的次级表示在内的应用而设立。
随便看	Institute of the Film Performing Arts,Film Bureau,Ministry of Culture of the P.R.C. Institute of the Oratory of St. Philip Neri / Oratorians Institute of the Qing Dynasty History Institute of Transportation Engineers Institute of Virology, Chinese Academy of Sciences Institute of Wetland Research, Chinese Academy of Forestry Institute of World Economics and Politics Chinese Academy of Social Sciences Institute of Zoology ,Chinese Academy of Sciences institutes on coastal zone studies in China institutional adjustment theory institutional arbitration institutional archives institutional care institutional care for the age institutional change institutional change of grassland property right in modern China institutional changes of Chinese urban development institutional civilization institutional critique institutional design institutional determinism institutional disequilibrium institutional economics institutional enforcement institutional environment

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