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
| 词汇 | half-life |
| 类别 | 英译汉、英汉双解翻译词典 |
| 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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