| 释义 |
alpha particle ˈælfəpɑːtɪkl 短语⁸⁴³²⁰⁺⁸
基本英英例句
n.α质点α粒子
Noun:
a positively charged particle that is the nucleus of the helium atom; emitted from natural or radioactive isotopes Upon gaining two electrons the alpha particle becomes a helium atom.
粒子获得两个电子之后就变成了氦原子。 scientrans |