Wire rope and assembly pulley on the flexible pumping units replace balance beam and connecting rod on regular pumping units.
柔性抽油机结构上使用钢丝绳和滑轮组替代了常规抽油机的游梁和连杆。
Wire rope and assembly pulley on the flexible pumping units replace balance beam and connecting rod on regular pumping units.
柔性抽油机结构上使用钢丝绳和滑轮组替代了常规抽油机的游梁和连杆。
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