| 单词 | positron |
| 释义 | positron /poz"i tron'/, n. Physics. an elementary particle having the same mass and spin as an electron but having a positive charge equal in magnitude to that of the electron's negative charge; the antiparticle of the electron. Also called antielectron, positive electron. [1930-35; POSI(TIVE) + (ELEC)TRON] |
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