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。
2
Obviously, the main effect factor on activated carbon pore structure is the raw material coal property.
分析结果表明，原料煤的性质是影响活性炭孔隙结构的主要因素。
3
It was indicated in the paper that the structural setting of the basin sedimentary basement is a major factor controlling coal quality and coal accumulation of Late Triassic in Fujian.