滑动构造下"三软"不稳定高突小倾角煤层正向揭煤技术
활동구조하"삼연"불은정고돌소경각매층정향게매기술
Technology of Positive Cutting Through Coal Seam in Gentle Inclined, Unstable, "Three-soft" and Outburst Coal Seam under Slide Tectonics
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