Commitment to the western three softinstability thick coal bed mining technology research, explore and master the three softcore instability thick coal bed mining technology, guns taken, the yield per unit at the National Research adopt the three softthic
Commitment to the western three softinstability thick coal bed mining technology research, explore and master the three softcore instability thick coal bed mining technology, guns taken, the yield per unit at the National Research adopt the three softthic
致力于豫西“三软”不稳定厚煤层开采技术研究，探索和掌握了“三软”不稳定厚煤层开采的核心技术，炮采、综采单产处于全国“三软”不稳定厚煤层开采领先水平。