An underwater remote control drilling machine was researched for drilling hole on the armor plate.
本文介绍了一种用于沉没油轮船体表面钢板开孔作业的水下遥控液压钻孔机的比例阀控系统的研究。
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There is another possibility: that drilling 5,000 feet underwater a species, are out of our depth.
但还存在另一种可能性: 在水下5000英尺钻井, 已超出了我们人类的能力范围.
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