英语词汇“atomic second”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	atomic second
释义	DictionarySeeatomic clock atomic second atomic second [ə′täm·ik ′sek·ənd] (physics) As defined in 1967, the duration of 9,192,631,770 periods of the radiation corresponding to the two hyperfine levels of the fundamental state of the atom of cesium-133.
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