Factories release chemicals, such as refrigerator, air conditioner and car exhaust black smoke is enough to the root of the erosion of the ozone layer.
冰箱、冷气等释放的化学物质，工厂及汽车排出的黑烟等都是足以侵蚀臭氧层的根源。
2
Some heat release rate formulas are added to the application software for calculation on the properties of the fire smoke flow in building.
将各种非稳态火源热释放速率计算式嵌入建筑物火灾烟流性状预测软件并进行了算例验证。
3
Therefore the article recommends that according to fire heat release rate, escape time and control height ofsmoke layer, the rate of mechanical smoke extraction should be reasonably decided.