Bian辩Bin.[化]元素铋(bismuth)的符号bi-: pref.；表示“二；双”biconical fiber taper双锥光纤bifunctional antibody双功能抗体bilinear substitution双线性代换Bi-block Slab Track双块式无砟轨道bi-ischial diameter坐骨棘间径bimolecular reduction双分子还原bi-articular muscle双关节肌biphase rectification全波整流,双相整流biparental inactivate双亲灭活bimetal type detector双金属式检测器