短語詞組

短語

• beam engine pump 橫梁發(fā)動機泵
• balance beam engine pump 發(fā)動機平衡桿泵
• beam balanced pump 游梁式抽油機
• beam -pump unit 游梁式抽油機
• balance e beam engine pump 發(fā)動機平衡桿泵
• walking beam pump 桿式泵
• beam pump well 桿泵井;游梁式抽油井
• beam pump unit 游梁抽油機
• walking beam pump coupling 桿式泵聯(lián)軸器
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