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atomic frequency standard
原子频标
当前最为准确和稳定的一大类频率标准的统称。是原子频率标准简称。
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>原子与分子物理学>冷原子分子物理>释义
atomic frequency standard
原子频标
atomic frequency scale
原子频标
Astronomy
atomic frequency standard
原子频标
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national circulating transformation pilot park
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national color
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national competitive intelligence
national competitiveness evaluation
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National Conference on Education in 1978
National Conference on Language and Script Work
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