roof lithologic character
roof lithologic character
顶板岩性特征
以上为机器翻译结果,长、整句建议使用 人工翻译 。
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Through analysis of lithologic character and composite structure of roof rock of No. 6 coal layer in Liuqiao Coal Mine, the stability of roof rock in different zones are assessed.
通过对刘桥矿区6煤层顶板岩层的岩性和岩性组合结构的分析,确定了不同区域的稳定性情况。
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