• Through this high pressure line, mud is pumped in to the standpipe and drill pipe.

    通过这根高压管线泥浆泵入管和钻忏杆。

    youdao

  • Through this high pressure line, mud is pumped in to the standpipe and drill pipe.

    通过这根高压管线泥浆泵入管和钻忏杆。

    youdao

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