单词	ferric oxide
释义	ferric oxide noun : the red or black oxide of iron Fe2O3 found in nature as hematite and as rust and also obtained synthetically and used especially in magnetic materials, as a pigment, and for polishing Example Sentences Recent Examples on the Web Two irons and three oxygens make ferric oxide, or Fe2O3—a complete picture that’s hard to pull apart. Matthew Hutson, The New Yorker, 18 Sep. 2021 So, all in all, Mars is red because of hematite, which is a red form of ferric oxide. Ethan Siegel, Forbes, 11 Mar. 2021 The greatest elevations occur in the ferric oxide-rich Tharsis region, but in the lowlands to the east of it, the abundances of ferric oxides plummets. Ethan Siegel, Forbes, 11 Mar. 2021 And the worldwide shortage of gamma ferric oxide has brought tape production to a crawl. David Grossman, Popular Mechanics, 11 Oct. 2019 The team also found that the asteroid’s chemistry was dominated by compounds called ferric oxides and phyllosilicates, which had never been seen before on Kuiper belt objects. New York Times, 10 May 2018 Word History First Known Use 1851, in the meaning defined above Medical Definition ferric oxide noun : the red or black oxide of iron Fe2O3 found in nature as hematite and as rust and also obtained synthetically and used as a pigment and for polishing
随便看	red seed red shrew red shrimp red silk cotton red silky oak red silver fir red silver ore red sindhi red siskin red snapper red snow red soil red sorrel red spider red spider crab red spirit red spruce Red Square red squill red squirrel red stain red star polyunsaturated polyunsaturates polyurethane

英语词典包含469781条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。