正子 (zhèng zǐ) — (physics) positron, antielectron

Definition

Examples

• 正子是电子的反粒子，带正电荷。
  zhèng zǐ Shì diàn zǐ de fǎn lì zǐ, dài zhèng diàn hè.
  A positron is the antiparticle of an electron, carrying a positive charge.
• 在PET扫描中，正子与电子湮灭产生光子。
  Zài PET sǎo miáo zhōng, zhèng zǐ yǔ diàn zǐ yān miè chǎn shēng guāng zǐ.
  In PET scanning, positrons and electrons annihilate to produce photons.
• 科学家在实验室里成功产生了正子束。
  Kē xué jiā zài shí yàn shì lǐ chéng gōng chǎn shēng le zhèng zǐ shù.
  Scientists successfully produced a positron beam in the lab.