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字词 衰变
释义 衰变shuāibiàn放射性元素自发地放射出粒子而变成另一种元素,如镭放射出α粒子后变成氡。{decay; radioactive element spontaneously emits particles and becomes another kind of element, e.g. radium becomes radon after emitting particles of α;}也叫also蜕变{tuìbiàn}
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更新时间:2025/4/19 5:29:18