“half-life”在英语词典中的解释及翻译

英语

“half-life”在美式英语词典中的解释及翻译

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half-lifenoun [ C usually sing ]

us /ˈhæfˌlɑɪf/

physics, earth science the amount of time needed for the radioactivity (= harmful form of energy) of a radioactive substance to be reduced by half

(half-life在剑桥学术词典的解释 ©剑桥大学出版社)