Birs比尔斯Bin.[化]元素铋(bismuth)的符号bi-: pref.；表示“二；双”bi - static radar双基地雷达biaxial orientation双轴取向bifocal pacing mode双灶起搏方式bifunctional linker双功能接头bicollateral bundle双韧维管束birefringent prisms偏振分光棱镜Bi -xing thinking比兴思维bipod walking robot双足步行机器人bicarbonate radical碳酸氢根bi-aspectual verb双体动词