乙種粒子 yǐ zhǒng lì zǐ

DEFINITIONS

  1. beta particle (electron, esp. high speed electron emitted by radioactive nucleus)

CHARACTERS

乙 yǐ
HSK 5
second; 2nd heavenly stem
種 zhǒng seed; race; offspring; to plant
粒 lì
HSK 6
grain; small particle
子 zǐ
HSK 1
offspring, child; fruit, seed of; 1st terrestrial branch