“frequency standards”的概念、定义、翻译、参考文献-科学参考

单词	frequency standards
释义	frequency standards Encyclopedia 理学〔原子物理应用〕释 frequency standards频率标准用信号频率相当准确和单一的正弦振荡信号发生器确定频率的计量。
随便看	dipole oscillator dipole potential dipole radiation dipole source dipole subsurface scattering model dipole term dipole transition Diponegoro’s Revolt dipotassium tetracarbonyl ferrate dip pen nanolithography dip-pen nanolithography Dipper dippers dipping dipping slot wave seismometer dipping，pressing and shredding joint machine dippy egg product dipropyl maleate diprotic acid di proton di-proton diproton di proton emission di-proton emission dipseudograph

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