... rod wiper 抽油杆的挡油器 rod wrench 抽油杆扳手 rod 杆 ...
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connecting rod wrench 连杆扳手 ; 连杆套筒扳手
Universal Master-Tie-Rod Wrench 远盛企业有限公司
connecting g rod wrench 连杆扳手
Wrench rod 搬手杆
rod end wrench flats 杆端极体
·2,447,543篇论文数据，部分数据来源于NoteExpress
The crank mechanism is arranged on the lower part of the insulation rod, and comprises a crank type wrench and a wrench bracket.
导杆伸入弯头后通过软索与设置在绝缘杆内的拉杆固定相连；
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