回火 huíhuǒ to temper Definitions Defs Origin Strokes Stroke Words Sentences Sents 回火 huí//huǒ to temper To improve the strength and toughness of metal by heating it to a specific temperature after quenching and then cooling it. backfire The reverse burning of a flame back into a pipe or engine during welding or combustion; to backfire or flare back. Frequency Movie subtitles 0.150 per million appears in 0% of films Written text 0.405 per million Sources Frequency data SUBTLEX-CHBCC Corpus (BLCU)
回火 huí//huǒ to temper To improve the strength and toughness of metal by heating it to a specific temperature after quenching and then cooling it. backfire The reverse burning of a flame back into a pipe or engine during welding or combustion; to backfire or flare back. Frequency Movie subtitles 0.150 per million appears in 0% of films Written text 0.405 per million Sources Frequency data SUBTLEX-CHBCC Corpus (BLCU)
