葛泉矿大倾角工作面三机配套改造及防倒防滑研究和应用
갈천광대경각공작면삼궤배투개조급방도방활연구화응용
Alteration of Face Equipment Cooperating and Study and Application of Preventing Tumble and Glide in Big Obliquity Working Face of Gequan Mine
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