危机矿山找矿
prospecting ore in resource exhausted mines
资源危机型黄金矿山
gold mine facing resource crisis
资源频危矿山
Mine with Resources Crisis
矿山机电设备
mining electromechanical equipment
洛阳矿山机械工程设计研究院
Arenga pinnota starch
luoyang mining machinery engineering academy
冶金矿山机械
metallurgical mine machinery
冶金部马鞍山矿山研究院；南京大学
MaanShan Institute of Mining Research
冶金部马鞍山矿山研究院环保研究所
Maanshan Environmental Protec-tion Research Institute