A study of the reliability of the face layout forms in gently inclined or inclined thin seams
缓倾斜、倾斜薄煤层工作面布置方式的可靠性分析
Mining Technology without Pillar in Raise Direction of Close and Overlapping Inclined Coal Seams
上山近距离压覆倾斜煤层无煤柱开采技术
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