成果题名:Ultra-Thick High-Production And High-Efficiency Longwall Mining Technique With Retreat Mining Along The Seam Dip Direction And Under Complicated Geological Conditions
作者: 杨科
成果题名:Ultra-Thick High-Production And High-Efficiency Longwall Mining Technique With Retreat Mining Along The Seam Dip Direction And Under Complicated Geological Conditions
作者: 杨科
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