矿山企业生产模拟
dynamic simulation in mining enterprise production
大同煤矿集团公司煤矿生产管理分公司
Coal Mine Manageing Branch Company of Datong mining Industry Group Company
固体矿山生态环境
solid mine ecological environment
矿山生态环境
eco-environment of the mine
Ecological Environment of Mines
mine eco-environment
eco-environment of mining area
矿山生态环境保护
mine ecological environment qrotection
mine′s ecological environment protection
矿山生态环境系统
eco-environmental system of mines
矿山生态环境修复
Mine-environmental restoration
球团矿生产
pelletized ore production