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Keyword [hard coal-rock]
Result: 1 - 3 | Page: 1 of 1
1.
Study On Confined Blasting Control Mechanism Of Hard Coal Rock With High Safety And Efficiency And Test Analysis
2.
Design And Research On Combined Cutting System Of Drum Shearer&High Pressure Water Jet
3.
Research On Mechanism And Prevention Of Coal Bumps Under The Condition Of Hard Coal-rock Structure
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