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 |
Research and application of drilling construction technology and gas drainage effect of downward coal uncovering borehole in high outburst mine
Zhang Baisong
Pingdingshan Tian 'an Coal Industry Co., Ltd., Exploration Engineering Department, Pingdingshan 467000, China


Copyright © CCI
Supported by: Beijing Magtech