sub level caving mine face
sub level caving mine face
分放工作面
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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The research results have been applied successfully in the no. 8105 fully mechanized face with sub-level caving of Yanjiahe Coal Mine, and satisfactory technical and economic effects are achieved.
研究成果在燕家河煤矿8105综放面成功应用，并取得了满意的技术经济效益。
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