英语词汇“nor-”的意思、释义、用法解释及翻译-春雷网

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词汇	nor-
释义	Definition of nor- in English: nor- prefix Chemistry Denoting an organic compound derived from another, in particular by the shortening of a chain or ring by the removal of one methylene group or by the replacement of one or more methyl side chains by hydrogen atoms. 〔化〕表示“正”，“降” noradrenaline Origin From nor(mal), originally used to refer to a compound without methyl substituents. Definition of nor- in US English: nor- prefix Chemistry Denoting an organic compound derived from another, in particular by the shortening of a chain or ring by the removal of one methylene group or by the replacement of one or more methyl side chains by hydrogen atoms. 〔化〕表示“正”，“降” norepinephrine Origin From nor(mal), originally used to refer to a compound without methyl substituents.
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