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单词
alpha particle
释义
alpha particle
n.
(名词)
A positively charged particle, indistinguishable from a helium atom nucleus and consisting of two protons and two neutrons.
α粒子:与氦原子核难以区分的带正电的粒子,包括两个质子和两个中子
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更新时间:2026/6/23 18:17:40