• 结果表明,放顶煤采煤支承压力分布形式分层开采类似量值影响范围有增减

    The result indicated That the abutment pressure distribution form was similar to that of slicing mining method but its magnitude and affecting range changed.

    youdao

  • 结果表明,放顶煤采煤支承压力分布形式分层开采类似量值影响范围有增减

    The result indicated That the abutment pressure distribution form was similar to that of slicing mining method but its magnitude and affecting range changed.

    youdao

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