About Dong Zhanyuan
About 中国鉱業大学(北京) 応急管理与安全工程学院,北京,100083
About Wu Guoqing
About 中煤科工集団西安研究院有限公司,西安,710077
About Zhongguo Meitan Dizhi
About coal seam
About coal field
About Antennas
About Optical waveguide,optical fibers,and fiber optics
About 炭層
About 陥没
About スロット
About 研究