Heating is by compulsory circulating ventilation, temperature raising is fast and spread even.
加热采强制循环送风方式，温度上升快速，分布均匀。
And the generator has firstly adopts airproof circulating ventilation system by after cooling of cooling water.
发电机首次采用冷却水二次冷却密封循环通风冷却系统。
The analysis provides guidance and direction for application, of controlled circulating ventilation in underground mines, especially those old mines.
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。
Three, equipment, a new air circulating system, 24 hours a day end ventilation supplication, also prevent the onset of window heat lost.
设备一套新风系统，每天24小时结束通风的恳求，还防止了开窗发作的热量丢掉。
Three, equipment, a new air circulating system, 24 hours a day end ventilation supplication, also prevent the onset of window heat lost.
设备一套新风系统，每天24小时结束通风的恳求，还防止了开窗发作的热量丢掉。
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