chlorofluorocarbon的精選

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用“chlorofluorocarbon”造句大全，chlorofluorocarbon造句

用“chlorofluorocarbon”造句大全，chlorofluorocarbon造句

2018-10-15
chlorofluorocarbon-CFCchlorofluorocarbonrefrigerantUSPresidentGeorgeW.Bushplanningtopushforfastereliminationofozone-damagingchemicalscalledhydrochlorofluorocarbon,orCFCs....