| 单词 | mean life |
| 释义 | mean lifeSEE SYNONYMS FOR mean life ON THESAURUS.COM noun Physics.the average time that an unstable particle or nucleus survives before it decays. decay time. Also called average life, lifetime. Words nearby mean lifemeaningful, meaningful relationship, meaningless, mean length of utterance, mean lethal dose, mean life, mean line, meanly, meanness, mean noon, mean planet Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for mean lifemean life nounphysics 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 15Symbol: τ Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 |
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