The effective mining method at small piece section of superhigh and complicated seam is explored.
探索有效的特厚复杂结构煤层小块段的开采方式，可提高效益，降低消耗，开采简单，便于生产。
This method can develop some seam curve of different size and shape.
依此可以对不同尺寸、不同形状的马鞍型焊缝曲线进行设计。
This method can develop some seam curve of different size and shape.
依此可以对不同尺寸、不同形状的马鞍型焊缝曲线进行设计。
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