a type of gas used especially in aerosols (= types of container that release liquid in very small drops) instead of CFC, as it is less harmful to the earth's ozone layer (the abbreviation for ‘hydrochlorofluorocarbon’) 氢氯氟烃（全写为 hydrochlorofluorocarbon，因对臭氧层损害较小，替代氯氟烃用于喷雾剂）