If punch through occurred, it can heavily affect the drilling ship's working safety.
基础刺穿的发生, 会严重影响钻井船的安全作业。
The programming for the anchoring of the drilling ship and navigation locating of the rig
钻井船抛锚导航及钻机定位程序设计
This program helps the drilling ship to cast anchors and locate the rig by the aid of color display.
本程序使用彩色显示器帮助钻井船抛锚导航及钻机定位。
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