Coalfield Geology Bureau of Henan Province,Coalfield Geology Bureau of Henan Province
袁志坚,熊亮.大口径瓦斯抽排井施工扩孔分级设计优选探讨[J].钻探工程,2014,41(11):17-19.YUAN Zhi-jian, XIONG Liang. Discussion on Optimization of Reaming Grading Design of Large Diameter Gas Drainage Well Construction[J]. Drilling Engineering, 2014,41(11):17-19.
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