论文部分内容阅读
Chlorineatomsfromchlorofluorocarbons(CFCs)depletestratosphericozoneandCFCsaregreenhousegasestoo.Owingtotheseenvironmentalprob
Chlorineatomsfromchlorofluorocarbons (CFCs) depletestratosphericozoneandCFCsaregreenhousegasestoo. Owingtotheseenvironmen talprob