“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	phase change phase change cooling storage phase change disc phase change energy storage phase change energy storage technology phase change erasable rewritable optical disk phase change heat storage Phase-change heat transfer phase change heat transfer on superhydrophilic surface phase change heat transfer on superhydrophobic surface Phase change in micro channels phase change material phase change material (PCM) phase-change memory，PCM phase change microcapsule phase change on micro/nano structured surface phase change polymer for energy storage phase change random access memory phase change random access memory, PRAM, PCM phase-change refrigeration phase characteristic phase closure Phase Closure Relationship phase coefficient phase coherence

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