| 单词 | positron |
| 释义 | positronWord family nounpositroniumpositron pos·i·tron /ˈpɒzətrɒn $ ˈpɑːzətrɑːn/ noun [countableC] technical a very small piece of matter that has the same mass as an electron but has a positive electrical charge 正电子 Examples from the Corpus positron• When an electron collides with a positron the two particles disappear, or annihilate, to create a high-energy photon.• The Dark Era begins when space is dominated by tiny particles such as photons, electrons and positrons. (1900-2000) positive + -tron (as in electron) |
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