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positron

美音:[´pɔzət´rɔn ]点这儿播放单词美音发声
英音:[´pɔzət´rɔn ]点这儿播放单词英音发声
n.正电子

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positron为短语/超纲词汇

positron


/'pɒzɪtrɒn; `pɑzɪ,trɑn/
n (physics 物) minute piece of matter (elementary particle) that has a positive electric charge and the same mass as an electron 正电子; 阳电子. Cf 参看 electron.

positron


n[C]technical
[Date: 1900-2000; Origin: positive + -tron (as in electron)]
a very small piece of matter that has the same mass as an electron but has a positive electrical charge