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指出近年来投产的一些矿井型无烟煤选煤厂在设计和建设中存在的问题 ,并对以后矿井型无烟煤选煤厂的设计建设提出了建议
Points out some problems existing in the design and construction of some anthracite anthracite coal preparation plants put into operation in recent years, and puts forward some suggestions on the design and construction of later coal anthracite coal preparation plant