| 单词 | positron |
| 释义 | positron (once / 69526 pages) n WORD FAMILY positron: positrons USAGE EXAMPLESAmyloid and tau can be detected with positron emission tomography, or a PET brain scan, and also measured in a person's spinal fluid. US News(Sep 14, 2016) It also predicted that the electron should have a partner: an antielectron, or positron. Stephen Hawking, A Brief History of Time: And Other...(1988) In 1930 he predicted the existence of the positron, a positively charged electron. Michael Hiltzik, Big Science(2015) n an elementary particle with positive charge; interaction of a positron and an electron results in annihilation Syn|Hyper antielectron antilepton the antiparticle of a lepton |
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