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顿巴斯中央区各矿井都采用2种单一类型(工作的和备用的)通风机通风。只有2个矿井采用不同类型的通风机。中央区部分矿井的通风参数参见文中表1,部分矿井通风装置参数参见文
Each mine in the central district of Donbass uses two single-type (working and standby) ventilators. Only 2 mines use different types of fans. Ventilation parameters of some mines in the central area can be found in Table 1, and some mine ventilation parameters can be found in