英语词汇half-life的翻译、用法及例句-MX2U.com英汉词典

词汇	half-life
释义	half-life noun [ C ] physics specialized uk/ˈhɑːf.laɪf/ us/ˈhæf.laɪf/ （放射性物质的）半衰期 the length of time needed for the radioactivity of a radioactive substance to be reduced by half
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