... 顶部偏心块 eccentric top weight 顶部驱动 top drive 顶部驱动底部出料间歇式离心机 top drive bottom discharge batch basket ...
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驱动轴顶部驱动，左右手均可选择或双轴同时驱动。
Drive shaft is top coming and a choice of right or left hand or double shafts.
顶部驱动钻井装置，分为电驱动顶驱和液压驱动顶驱。
The top drive drilling system, divided into electrical top drive and hydraulic top drive.
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。
In view of this, author launched the design and research in a full-hydraulic top drive drilling system.
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