... telescoping gin pole 伸缩式拔杆 telescoping joint 套筒连接 telescoping mast 伸缩式轻便井架 ...
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A telescoping joint at the surface in floating offshore operations that permits vessel heave (vertical motion) while maintaining a riser pipe to the seafloor.
浮动海洋钻井作业时位于水面的伸缩节，它允许钻井船升降(垂直运动)而保持导管接触海底。
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