午夜欧美大片免费观看,欧美激情综合五月色丁香,亚洲日本在线视频观看,午夜精品福利在线

The meteorological index of fireworks burning is one of meteorological service products for government emergency response to safety management and air pollution controlling. By considering the meteorological factors affecting the safety of firework burning, the spread of pollutants, cleaning after burning, and air quality, such as wind speed, relative humidity, precipitation, air pollution, etc., the meteorological index of fireworks burning is devised by means of the methods of membership degree and function's maximum. The burning index is divided into four levels from low to high: suitable, fairly suitable, unsuitable, and very unsuitable. The background of burning index, scientific connotation, forecast methods, and service strategy are discussed.