乙種射線 yǐ zhǒng shè xiàn

DEFINITIONS

  1. beta ray (electron stream from radioactive decay)

CHARACTERS

乙 yǐ
HSK 5
second; 2nd heavenly stem
種 zhǒng seed; race; offspring; to plant
射 shè
HSK 5
shoot, eject, issue forth, emit
線 xiàn thread, line, wire; clue