About Shi Zhijun
About 中煤科工集団西安研究院有限公司,陜西 西安,710077
About Dong Shuning
About 中煤科工集団西安研究院有限公司,陜西 西安,710077
About Yang Junzhe
About 神華神東煤炭集団有限責任公司,陜西 神木,719315
About Xu Chao
About 中煤科工集団西安研究院有限公司,陜西 西安,710077
About Hao Shijun
About 中煤科工集団西安研究院有限公司,陜西 西安,710077
About Li Quanxin
About 中煤科工集団西安研究院有限公司,陜西 西安,710077
About Chen Dianfu
About 神華神東煤炭集団有限責任公司,陜西 神木,719315
About Yao Ke
About 中煤科工集団西安研究院有限公司,陜西 西安,710077
About Liu Jianlin
About 中煤科工集団西安研究院有限公司,陜西 西安,710077
About Tian Dongzhuang
About 中煤科工集団西安研究院有限公司,陜西 西安,710077
About Meitian Dizhi yu Kantan
About twist drill
About pressure loss
About roadway
About motor
About reliability(property)
About detonation
About torsion(phenomenon)
About borehole
About coal seam
About well(oil and gas)
About pressurization
About signal transmission
About mining operations
About coal mine
About pulse
About Drilling
About 炭鉱
About 坑井
About 炭層
About ドリル
About 掘削
About キー