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单词 methylnaphthalene
释义

methylnaphthalene

noun

meth·​yl·​naph·​tha·​lene ˌme-thəl-ˈnaf-thə-ˌlēn How to pronounce methylnaphthalene (audio)
-ˈnap-
: either of two isomeric hydrocarbons C11H10
especially : an oily liquid used in determining cetane numbers

Word History

First Known Use

circa 1885, in the meaning defined above

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更新时间:2025/1/9 7:02:24