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乙种射线
乙種射線
yǐ
zhǒng
shè
xiàn
beta ray (electron stream from radioactive decay)
CEDICT
(physics) beta ray
beta ray
Wiktionary
Entry Composition
1
乙种
yǐ
zhǒng
type B; category B; second class or grade; beta-
2
射线
shè
xiàn
ray