英语词汇“mean life”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	mean life
释义	mean life mean life n (General Physics) physics the average time of existence of an unstable or reactive entity, such as a nucleus, elementary particle, charge carrier, etc; lifetime. It is equal to the half-life divided by 0.693 15. Symbol: τ mean life mean life See half-life. mean life [′mēn ′līf] (physics) The average time during which a system, such as an atom, nucleus, or elementary particle, exists in a specified form; for a radionuclide or an excited state of an atom or nucleus, it is the reciprocal of the decay constant. Also known as average life; lifetime. mean life mean life (mēn līf) The average lifetime of decay of a radioactive atom. Synonym(s): average life. mean life (mēn līf) The average lifetime of decay of a radioactive atom. Synonym(s): average life. AcronymsSeemL
随便看	stick her nose up in the air stick her nose where it isn't wanted stick her nose where it's not wanted stick her oar in stick her oar in something stick her oar into something stick her spoon in the wall stick her together stick her tongue out stick her tongue out at stick her up stick her with stick him down stick him in stick him into stick him together stick him up stick him with stick his bib in stick his chin out stick his head above the parapet stick his neck out stick his nose in stick his nose in something stick his nose in the air

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