同家梁井田11号煤层粗砂岩顶板赋存规律及开采对策

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同家梁井田11号煤层粗砂岩顶板赋存规律及开采对策的英文翻译

基本释义

The Depositing Regulations of and Mining Countermeasures for the Grit Stone Roof of No. 11 Coal Seam in Tongjialiang Coal Mine

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