• 曲柄平衡抽油机平衡块位于旋转的曲柄上,而在梁平衡抽油机上平衡块位于相对一上。

    It is located on a rotary crank on a crank-balanced pumper and can also be located on the walking beam on the end opposite the well on a beam balanced pumper.

    youdao

  • 固定抽油机钢板

    The steel plate that is attached to the end of the walking beam on a beam pumping unit.

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  • 一旦做完下沉练习,再尝试一些容易技巧,想象一整天才能

    Once you have performed your sink-downs, try some easy laps of swimming. Swim at a slow pace and imagine you have all day to get to the other end.

    youdao

  • 一旦做完下沉练习,再尝试一些容易技巧,想象一整天才能

    Once you have performed your sink-downs, try some easy laps of swimming. Swim at a slow pace and imagine you have all day to get to the other end.

    youdao

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