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Keyword [soft low permeability coal seam]
Result: 1 - 3 | Page: 1 of 1
1.
The Research On The Effect Of Guiqing Coal Mine Hydraulic Hole And Coal Unloading Quantity On Improving Permeability
2.
Experimental Study On Strengthened Extraction By Hydraulic Punch Injection Gas Displacement In Sub-layer Borehole
3.
Research On Pneumatic Punching And Unloading Technology Of Soft Coalbed Methane
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