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Study on the optimum location for entry in lower coal seam with variable spacing in Meihuajing coal mine
刘晓明, 李铁峥, 雷学涛, 黄海鹏, 李 杨, 任玉琦, 王文迪
Coal Engineering . 2023, (7): 1 -6 .  DOI: 10.11799/ce202307001