medium thickness seam 中厚层
medium-thickness seam mining method [矿业] 中厚煤层采煤法
medium-thickness seam mining 中厚煤层开采
inclined medium-thickness seam 急倾斜中厚煤层
medium-thickness coal seam [矿业] 中厚煤层
medium m thickness seam 中厚层
inclined medium-thickness coal seam 中厚倾斜煤层
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The article introduces the shortwall mining method along strike in medium-thickness seam with great dip angle, which is based on individual hydraulic prop and has brought great economic effect.
在大倾角中厚煤层推行走向短壁采煤方法，使用单体液压支柱，取得较好的技术经济效果。
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