| 单词 | elementary particle |
| 释义 | > as lemmaselementary particle elementary particle n. now used in Physics spec. for any of a number of particles smaller than an atom (the leptons, mesons, and baryons) which are not known to be composed of any simpler particles and which are characterized by having a definite mass, a lifetime that is long compared with the interaction time, and well-defined electromagnetic properties, and are capable of an independent existence.extracted from elementaryadj.< as lemmas |
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