| 单词 | hfc |
| 释义 | > as lemmasHFC HFC n. Chemistry = hydrofluorocarbon n. ΚΠ 1988 PR Newswire (Nexis) 5 Jan. Based on their physical and chemical properties, two compounds, HCFC-123 and HFC-134a, appear to be promising candidates to replace CFCs in many current applications. 1994 N.Y. Times 11 Jan. c5/2 HFC's are generally regarded as harmless to atmospheric ozone. 2000 Plumbing Mag. (Institute of Plumbing) May 36/4 Refrigerants are no longer the environmentally harmful CFCs of old but are blended HFC chemicals accepted by global legislation. < as lemmas |
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