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单词 Freon
释义 Freon|ˈfriːən|
Also freon.
Proprietary name for any of a group of partially or completely halogenated simple hydrocarbons containing fluorine and usu. chlorine or bromine, used esp. as refrigerants and aerosol propellants.
1932Industr. & Engin. Chem. XXIV. 620 Freon..was developed in a deliberate attempt to produce, by chemical arrangement, a refrigerant..which still has properties especially favorable to economic operation.1941Archit. Rev. XC. 52 Cooling is provided by refrigerating compressors, using Freon gas, a safe and harmless refrigerant.1945Electronic Engin. XVII. 762 Insulation is provided by freon gas.1950J. D. Park in J. H. Simons Fluorine Chem. I. xv. 527 The structures of most of the ‘Freons’ having from one to five carbon atoms.1959Trade Marks Jrnl. 25 Feb. 220/2 Freon, fluorinated hydrocarbons being chemical substances for use as propellents for aerosols. E. J. Du Pont de Nemours and Company.1966McGraw-Hill Encycl. Sci. & Technol. V. 501/1 The most popular freons are Freon-11 and Freon-12.1967Jane's Surface Skimmer Systems 1967–68 106/1 The pilothouse..and berthing spaces are air-conditioned during the cooling season by a 13 ton capacity freon type compressor system.1968New Scientist 25 July 197/1 Freons, the halogenated varieties of methane and ethane..are pretty inert chemically.
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