beta-ray therapy贝他射线治疗
beta-ray measurement贝他射线测量
beta-ray monitoring贝他射线侦测
beta-ray thickness射线测厚
Beta-ray射线
beta-ray spectrum贝他射线谱
isotope beta-ray贝他射线同位素
counter beta-ray贝化射线计数器
beta-ray isotope贝他射线同位素
同义词：beta radiationelectron radiation
N（名词） a stream of beta particles β射线