Keyword [pumping radius] Result: 1 - 4 | Page: 1 of 1 1.  The Aging Research On Characteristics Of Gas Drainage Radius In Bedding Drilling On Wulunshan Coal Mine 2.  Application Research On Gas Outburst Prevention Technology In Coal Seam With Floor Drainage Roadway In 1307 Working Face Of Zhaozhuang Coal Mine 3.  Experimental Study On Gas Extraction Parameter Determination And Hole Layout Optimization In 120502 Working Face 4.  Study On Technology Of Increasing Flow And Promoting Pumping Of Water Jet Cavitation In Parallel Drilling Along Layer   <<First  <Prev  Next>  Last>>  Jump to

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