out-seam put
出发缝把
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Therefore, the conventional staggered distance model of ultra-close thin coal seam group during combined mining is put forward; and the theoretical research and physical simulation are carried out.
因此提出极近距离薄煤层群联合开采常规错距开采模型，并进行理论和物理模拟试验研究。
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