beam pump
短语词组
- beam engine pump 橫梁發動機泵
- balance beam engine pump 發動機平衡杆泵
- beam balanced pump 遊梁式抽油機
- beam -pump unit 遊梁式抽油機
- balance e beam engine pump 發動機平衡杆泵
- walking beam pump 杆式泵
- beam pump well 杆泵井;遊梁式抽油井
- beam pump unit 遊梁抽油機
- walking beam pump coupling 杆式泵聯軸器 返回 beam pump