Must do the partition, also must first consider the ventilationfactor.
必须做的隔断，也要首先考虑通风因素。
2
The ground is cold and moist, with the chill factor amplified by ventilation fans used to blow fresh air into the mine, and the sprinkler that keep the coal dust down.
因为有通风设备往里面输送新鲜空气，还有洒水器不断地给煤浇水以降温，所以地下既阴冷又潮湿。
3
Natural ventilation in heated pressure occupies a more and more important position in the building ventilation design because of being free from outside factor influence.