Wire line flexible pumping rod is a coiled rod with sealing wire line.

钢丝绳柔性抽油杆是一种特种密封钢丝绳的连续抽油杆。

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Wire line flexible pumping rod is a coiled rod with sealing wire line.

钢丝绳柔性抽油杆是一种特种密封钢丝绳的连续抽油杆。

youdao