| 释义 |
pos·i·tron /ˈpɒzətrɒn $ ˈpɑːzətrɑːn/ noun [countable] 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 Corpuspositron• 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.Origin positron (1900-2000) positive + -tron (as in electron)pos·i·tron nounChineseSyllable a matter has that very same of piece Corpus the small |