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Encyclopedia
理学
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level lifetime
能级寿命
原子核的基本物理量。包括基态、激发态的寿命。从统计观点看,是指一条能级平均能存在的时间。
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Urban Planning of Macao
urban planning of Pyongyang
urban planning of Shengyang
urban planning of Tianjin
urban planning of Versailles
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Urban Planning Society of China
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urban population base of China
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