词汇 | alpha particle |
释义 | alpha particle noun [ C ] physics specialized uk/ˈæl.fə ˌpɑː.tɪ.kəl/ us/ˈæl.fə ˌpɑːr.t̬ə.kəl/ α粒子(放射性原子分裂时所产生的带正电荷的微小粒子,通常在核反应时产生) an extremely small piece of matter with a positive electrical charge, produced when a radioactive atom is broken down, usually in a nuclear reaction |
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