防爆防火灭火装置
explosion-proof and fireproof and fire extinction device
防火灭火新技术
new fire prevention technology
防火与防爆
fire and explosion prevention
第四纪火山矿床
quarternary volcanic ore deposit
火山矿床
mineral deposits related to volcanism
容矿火山岩
ore-hosting volcanic rocks
ore-hosting volcanics
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
铀矿与矿石处理工厂
uranium mine and ore processing plant
与火山岩有关铜矿
Copper Deposits Relative to Volcanics
长白山火山
changbai mountain volcanoes
Changbaishan volcano
Mountain Changbai volcano
Changbai volcano
changbai volcanic province