The function of hydrocarbons and nitrogen oxides in photochemical smog formation and the formative process of ozone and peroxyacetyl nitrate are discussed.

介氮氧物、碳氢合物在形成烟雾中的作用和臭氧、过氧酰硝酸酯产生的过程,并介烟雾的形成机理。

Afterwards " fuliginous model " , " photochemical smog " after pollution, modern is being entered with " indoor air is polluted " the 3rd generation that is a mark pollutes period.

继“煤烟型”、“烟雾型”污染后，现代人正进入以“室内空气污染”为标志的第三代污染时期。