Biakn.比亚克(在印度尼西亚；东经 122º54' 南纬 0º54')Bin.[化]元素铋(bismuth)的符号bi-: pref.；表示“二；双”bilinear function双线性函数bimodal volcanism双峰火山作用biarticulate palp双节触须(动)bipinaria elegans等腕羽腕幼虫bimodule algebras双模代数bijective mapping双向单射,双射bi-phase medium双相介质bivalent releaser二价释放刺激bilayer insulator双绝缘层biaxial propeller双轴推进器