单词	methanesulfonic acid
释义	methanesulfonic acid noun meth·​ane·​sul·​fon·​ic acid ˌme-ˌthān-ˌsəl-ˈfä-nik-  -ˈfō- variants or methane sulfonic acid chemistry : a corrosive liquid acid CH4O3S that is used especially as a catalyst in chemical reactions (such as polymerization and esterification) Methanesulfonic acid has been developed as an esterification catalyst in place of sulfuric acid for the synthesis of resins in paints and coatings. Stanley E. Manahan, Toxicological Chemistry and Biochemistry, 2003 The mesylate salt is obtained by reaction with methanesulfonic acid. Anna M. Wodlinger, Remington: The Science and Practice of Pharmacy, 2005 Word History First Known Use 1892, in the meaning defined above
随便看	underdress underdressed underdresses underdressing underdrew underdrift underdrive underdriven underearth undereaten undereating undereats undereducated underemphases underemphasis underemphasise underemphasised underemphasises underemphasising underemphasize underemphasized underemphasizes underemphasizing underemployed underemployment

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