短语词组短语BENT NOSE PIPE WRENCHES 鹰嘴管子钳Bent -pipe system 贝尔电话网路系统bent -pipe 弯管bent drill pipe [油气]弯钻杆return bent pipe 回弯管Bent pipe factory 弯管厂returnj bent pipe 回弯管cold -bent pipe 冷弯钢管 返回 bent pipe