chlorofluorocarbon造句
chlorofluorocarbon-CFCchlorofluorocarbonrefrigerantUSPresidentGeorgeW.Bushplanningtopushforfastereliminationofozone-damagingchemicalscalledhydrochlorofluorocarbon,orCFCs....
chlorofluorocarbon-CFCchlorofluorocarbonrefrigerantUSPresidentGeorgeW.Bushplanningtopushforfastereliminationofozone-damagingchemicalscalledhydrochlorofluorocarbon,orCFCs....