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部分卤代
environ.	partially halogenated chlorofluorohydrocarbon Hydrocarbons whose hydrogen atoms have been partially substituted with chlorine and fluorine. They are used in refrigeration, air conditioning, packaging, insulation, or as solvents and aerosol propellants. Because they are not destroyed in the lower atmosphere they drift into the upper atmosphere where their chlorine components destroy ozone (碳氢化合物的氢原子已经部分取代氯氟。它们被用于制冷、空调、包装、保温、或溶剂和气溶胶推进剂。因为当它们漂流到大气时，不会对上部大气圈的臭氧造成破坏。)