短語詞組短語branch h line 支線branch -line railway 支線線路Branch -line 支線Pingxi Branch Rail Line 平溪支線coupler branch -line 叉路藕合器private branch exchange line 專用交換機(jī)線;專用小交換機(jī)中繼線branch gas line detail 支氣管路 返回 branch line