The smoke and pollutants in the atmosphere is the main reason for the formation of the paint fading, discoloration.
大气中的油烟和污染物是形成车漆褪色、变色的主要原因。
2
The reasons of the formation of Photochemical Smoke is analyzed, its production harms brought about, meanwhile, came up with some countermeasures of preventing photochemical smoke is discussed.
Not only the formation, characters and harmfulness were introduced, but also the removal of free radicals in cigarette smoke by plant additives was discussed in detail.