• Among several factors, dip Angle of coal seam is the most important factor affecting the height of the three zones.

    诸多影响因素中,煤层倾角控制“三带高度主要因素

    youdao

  • Among several factors, dip Angle of coal seam is the most important factor affecting the height of the three zones.

    诸多影响因素中,煤层倾角控制“三带高度主要因素

    youdao

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