Its main constituents are sulphuric acid and nitric acid, in the form of oxides of sulphur and nitrogen (sulphur dioxide and nitrous oxide) which are formed by a complex chemical action.
酸雨的主要成分是硫酸根與硝酸根，它們是硫與氮的氧化物（二氧化硫與氮氧化物）經過複雜的化學作用形成。