positron [ˈpɑ:zɪtrɑ:n]

例句:

• I was soon lying in a positron-emission tomography machine.
  来自SA
• After an immeasurably short time interval, the electron - positron pair recombine.
  电子 ― 正电子偶经过一个不可测量的短暂时间间隔后就重新复合.
  
• The positron is an antielectron.
  正电子就是反电子.
  
• The electron - positron pair may survive without recombining.
  电子 - 正电子偶可以存在下来而不再复合.
  
• Photons are bosons consisting of an electron-positron assembly.
  来自SA
• The dark matter would disappear, replaced by an electron-positron pair.
  来自THETIMES