• 发明为分体式方便解体动力牵引利于绞车罐笼

    The winch is of split type, can be conveniently split into the dynamic part and the traction part, and is beneficial to descend a well from a cage.

    youdao

  • 发明为分体式方便解体动力牵引利于绞车罐笼

    The winch is of split type, can be conveniently split into the dynamic part and the traction part, and is beneficial to descend a well from a cage.

    youdao

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