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单词 positron
释义
positronpos‧i‧tron /ˈpɒzətrɒn $ ˈpɑːzətrɑːn/ noun [countable] technical Word Origin
WORD ORIGINpositron
Origin:
1900-2000 positive + -tron (as in electron)
Examples
EXAMPLES FROM THE CORPUS
  • The Dark Era begins when space is dominated by tiny particles such as photons, electrons and positrons.
  • When an electron collides with a positron the two particles disappear, or annihilate, to create a high-energy photon.
a very small piece of matter that has the same mass as an electron but has a positive electrical charge
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更新时间:2026/6/5 4:15:29