来自李旭光的问题
英语翻译Warmwaterfreezesmorequicklythancoldwater.SirFrancisBaconsaidthatalmostfourhundredyearsago.Butfewpeoplebelievedhimuntil1970.InthatyearaCanadianscientistGeorgeKillprovedtheEnglishprofessorwasright.DrKill
英语翻译
Warmwaterfreezesmorequicklythancoldwater.SirFrancisBaconsaidthatalmostfourhundredyearsago.Butfewpeoplebelievedhimuntil1970.InthatyearaCanadianscientistGeorgeKillprovedtheEnglishprofessorwasright.DrKillfilledanopenoilpail(桶)withcoldwater.Hefilledanotherwithwarmwater.Heputbothinthesamelowtemperature.Thewarmwaterfrozefirst.Thelackofcoversonthepailsisthesecret.Someofthewarmwaterchangedintovapor.Thismeantthatlessofthewarmwaterwaslefttobefrozen.Andsothewarmwaterfrozefasterthanthecoldwatereventhoughithadagreatertemperaturedroptomake.
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2020-11-15 04:02