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In view of this, author launched the design and research in a full-hydraulic top drive drilling system.
鉴于此,笔者开展了全液压顶部驱动钻井系统的设计与研究。
youdao
-
In view of this, author launched the design and research in a full-hydraulic top drive drilling system.
鉴于此,笔者开展了全液压顶部驱动钻井系统的设计与研究。
youdao