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。
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。
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.
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