• The research result showed that the average transport work content of ore and rock in open-pit decreases as bench height increasing.

    研究结果表明随着台阶高度增加,采出矿岩平均运输含量呈下降趋势。

    youdao

  • An experimental test of bench mining in the high and dangerous slope of a certain open-pit mine was made.

    露天矿山高危边坡上进行了台阶采矿试验研究。

    youdao

  • An experimental test of bench mining in the high and dangerous slope of a certain open-pit mine was made.

    露天矿山高危边坡上进行了台阶采矿试验研究。

    youdao

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