... borehole lead insulation (电机)空心轴引线绝缘 borehole mining 钻井采矿法 borehole pump 深井泵, 钻井泵(一般为离心泵, 悬挂在钻井内) ...
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The inverted fissure in ZK552 borehole on a mining area has made leakage.
某矿区ZK552钻孔中的“倒裂隙”造成漏失。
The measuring principle, hardware circuit principle and software design of WGL-1 intelligent mining borehole depth and dip meter are introduced.
介绍了智能WGL-1型采矿中深孔深度倾角测量仪的测量原理，硬件电路原理及软件设计。
This paper analyses problems concerning the conventional continuous loading structure in open mining deep borehole blasting.
本文分析了露天矿深孔爆破长期沿用的连续装药结构存在的问题。
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