煤炭与化工
Home  |  (对应重点客户)不要改栏目名称  |  Message  |  中文
CCI
Current Issue| Next Issue| Archive| Adv Search |
Practice and Research of High Level Borehole Gas Drainage Technology in Fully Mechanized Top Coal Caving Working Face
ZHAO Wen-li
Datong Vocational and Technical College of Coal, Datong  037003, China


Copyright © CCI
Supported by: Beijing Magtech