Keyword [boreholes] Result: 81 - 87 | Page: 5 of 5 81.  Research And Application Of Gas Drainage Technology Of Long Bedding Boreholes In Fracture Zone Of Shuguang Coal Mine 82.  Study On The Influence Mechanism Of Gas Drainage Concentration In Bedding Boreholes And Its Control Optimization 83.  Study On Optimal Arrangement Of Gas Drainage Boreholes In High Gas And Low Permeability Coal Seams 84.  Study On The Gas Drainage Technology By Crossing Boreholes In Floor Rock Roadway In Yangquan No.5 Coal Mine 8406 Mining Face 85.  Circuit Design Of Ultrasonic Image Logging Tool For Small Radius Boreholes 86.  Study On The Gradual Change Rule Of The Influence Range Of Hydraulic Flushing In Layer Drilling Of Changping Coal Mine 87.  Study On Pressure Relief Mechanism And Engineering Application Of Sectional Boreholes Enlargement Technology   <<First  <Prev  Next>  Last>>  Jump to

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