It is cloudy phenomenon because the air suspension with a lot of smoke, dust particles encountered water formed, make the line of sight fuzzy and lead to decreased visibility.
这是因为随着浑浊现象的大量烟雾的空气悬架，尘埃颗粒会形成的水，使视线模糊，导致能见度降低。
2
Classifies the determination methods into those by temperature profiles, visibility profiles and combustion product concentration profiles in terms of characteristic parameters of smoke.