About Zhang Zhanguo
About 国家能源集団,北京,100011
About Ma Zhiyong
About 中煤科工集団重慶研究院有限公司,重慶,400037
About Wang Zhen
About 中煤科工集団重慶研究院有限公司,重慶,400037
About Kuangye Anquan yu Huanbao
About shock(mechanics)
About blowout of gas
About coal seam
About coal mine
About coal field gas
About ガス濃度
About 盤圧
About Rock burst,gas outburst,blooding,fall
About Mine fire,explosion and gas
About Coal mines,coal resources
About 衝撃
About 地圧
About 炭層ガス
About 防衛
About 体系
About 研究