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手提式小火钻在南芬露天矿的试验研究表明,南芬露天矿适合于用火钻机扩孔,且对克服根底和降低穿孔费用有明显效果。
The experimental study of handheld small fire drill at Nanfen open-pit mine shows that Nanfen open-pit mine is suitable for reaming with a fire drill and has obvious effect on overcoming the root and reducing the cost of punching.