- rubidium atomic frequency standard
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- Generic specification of rubidium frequency standards
銣原子頻率標(biāo)準(zhǔn)通用技術(shù)條件 - Measuring methods for rubidium frequency standards
銣原子頻率標(biāo)準(zhǔn)測(cè)試方法 - Verification regulation of rubidium gas cell frequency standards
銣原子頻率標(biāo)準(zhǔn)檢定規(guī)程