beam pump

短语词组

短語

• 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
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