短语词组短语railway weigh -bridge 铁路地秤Weigh -bridge room 地秤室dial underground weigh -bridge 字盘式地中衡Automatic Rail -weigh Bridge 自动轨道衡lever r under -ground weigh bridge 杠杆式地中衡lever under -ground weigh bridge 杠杆式地中衡 返回 weigh-bridge