“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	object diagram object distance object distance, subject distance object domain object focus object fronting object full subcategory object function object glass object height object hit wound object identifier objectification objectification of labour objectified labour object in a category objection objection to distribution scheme objection to enforcement Objective objective objective analysis objective art objective aspects of crime objective audiometric instruments

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