请输入您要查询的英文单词:
单词
half-life
释义
half-life
n.
the time taken for the radioactivity or some other property of a substance to fall to half its original value
半衰期
(
物质的放射性或其他特性降至其原值一半所用的时间
)
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更新时间:2026/8/9 20:58:37