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以上来源于: WordNet
N the radioactive transformation of an atomic nucleus accompanying the emission of an electron. It involves unit change of atomic number but none in mass number β衰变 (Also called beta transformation, beta process)
The isotope 212bi decays through both alpha and beta processes that have similar time-scales for this nucleus.
同位素铀衰变通过阿尔法和贝塔过程中,类似的时间尺度这一核心。
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