分析了可控循环通风方法的类型及应用该技术所产生的良好经济效益。
The type and application of a controllable circulation ventilation method are analyzed. The good economic benefits produced by the technology are presented.
为可控循环通风的应用，特别是对衰老矿井解决矿井通风问题提供了清晰的思路和方向。
The analysis provides guidance and direction for application, of controlled circulating ventilation in underground mines, especially those old mines.
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