It's not only effectively reduced the 10,000 tons' tunneling rate and the cost of coal, but also greatly enhanced the recovery of the mine resources, and achieved considerable economic benefits.
其不仅有效的降低了万吨掘进率、降低了原煤成本，而且大大提高了矿井的资源回收率，取得了可观的经济效益。
It's not only effectively reduced the 10,000 tons' tunneling rate and the cost of coal, but also greatly enhanced the recovery of the mine resources, and achieved considerable economic benefits.
其不仅有效的降低了万吨掘进率、降低了原煤成本，而且大大提高了矿井的资源回收率，取得了可观的经济效益。
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