CHENG Huan LI Xiaowei, . Study on drilling sealing length of gas drainage with horizontal drill bore[J]. COAL SCIENCE AND TECHNOLOGY, 2017, (9).
Citation:
|
CHENG Huan LI Xiaowei, . Study on drilling sealing length of gas drainage with horizontal drill bore[J]. COAL SCIENCE AND TECHNOLOGY, 2017, (9).
|
CHENG Huan LI Xiaowei, . Study on drilling sealing length of gas drainage with horizontal drill bore[J]. COAL SCIENCE AND TECHNOLOGY, 2017, (9).
Citation:
|
CHENG Huan LI Xiaowei, . Study on drilling sealing length of gas drainage with horizontal drill bore[J]. COAL SCIENCE AND TECHNOLOGY, 2017, (9).
|