| 单词 | positron |
| 释义 | Word Frequency positron(ˈpɒzɪˌtrɒn) noun physics the antiparticle of the electron, having the same mass but an equal and opposite charge. It is produced in certain decay processes and in pair production, annihilation occurring when it collides with an electron Word origin C20: from posi(tive + elec)tron |
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