短語詞組短語branched fiber structure 分叉纖維結(jié)搆branched chain structure 支鏈結(jié)搆y -branched structure 型分支結(jié)搆comb -branched structure 梳狀支鏈結(jié)搆star -branched structure 星形支化結(jié)搆 返回 branch structure