“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	hydroxy bridge hydroxycyclopentane hydroxyethyl cellulose hydroxyl hydroxylamine hydroxylase hydroxylate anomaly hydroxylation hydroxyl maser hydroxyl radical hydroxyl terminated polybutadiene propellant hydroxyl-terminated polybutadiene propellant hydroxylysine hydroxymethylation hydroxynervonic acid hydroxyproline hydroxypropyl methyl cellulose hydroxy silicone oil hydroxy tryptamine hydroxytryptophane hydrozirconation hydrozirconation reagent hydrozoans Hydrus Hye-cho

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