Bieln.比尔Bin.[化]元素铋(bismuth)的符号bi-: pref.；表示“二；双”bifurcation buckling分支屈曲bilaminar blastoderm二层胚盘Biejiajian decoction鳖甲煎丸bifunctional antibod双功能抗体biepharophthalmostat[医] 睑球固定器bi-medial needling阴刺bifunctional plasmid双功能质粒bivalve urethroscope开闭式尿道镜bimetallic capacitor双金属片电容器bifurcation diagrams分岔图