单词	hydrochlorofluorocarbon
释义	hydrochlorofluorocarbon /ˌhʌɪdrəˌklɔːrə(ʊ)ˈflʊərə(ʊ)kɑːbən / /ˌhʌɪdrəˌklɔːrə(ʊ)ˈflɔːrə(ʊ)kɑːbən/ (abbreviation HCFC) noun Chemistry Any of a class of inert compounds of carbon, hydrogen, chlorine, and fluorine, used in place of CFCs as being somewhat less destructive to the ozone layer.Many CFCs have been replaced with related materials known as hydrochlorofluorocarbons which reportedly do not interfere with the ozone layer.... In the 1970s it was established that CFCs were eroding the earth's ozone layer, and since then they have gradually been replaced by less harmful chemicals such as hydrochlorofluorocarbons and butane. Blowing agents such as chlorofluorocarbons, and to a lesser extent hydrochlorofluorocarbons, have been identified with the destruction of the earth's protective ozone layer.
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