An improvement of mining method was carried out in Miaoling Gold Mine according to the change of mining conditions.
庙岭金矿针对矿体开采条件的变化，适时对采矿方法进行了改进。
This paper studies the improvement of the dressing technology in Fangyuan Mining on the basis of its technology process and actual production according to the theory and method of dressing technology.
按照选矿专业的理论和方法，结合方圆公司选矿工艺流程和生产的实际情况，改进了选矿工艺。
A kind of mining oil gas method of the convection heating up oil-shale, involves the underground solid state energy and the mineral mining method improvement.
一种对流加热油页岩开采油气的方法，涉及对地下固态能源与矿物开采方法的改进。
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