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Keyword [alternate distance]
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1. Study On Reasonable Alternate Distance And Mining Technology Of 1.0m Very Contiguous Seams Simultaneous Production
2. Research On Mining Scheme Of Close-distance Seams In Xinzhi Coal Mine
3. Study On Mining Technology Of Double-unit Face In Thin Seam
4. Study On The Mining Roadway Arrangement And Surrounding Rock Control Technology Of Ultra-close Multiple-seams Mining
5. Study On Reasonable Layout For The Water Draining Tunnel Under Goaf Of Closed Coal Seam
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