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单词 methyl
释义
methyl
noun[CorU]
chemistryspecialized
uk
/ˈmeθ.ɪl/us
/ˈmeθ.əl/
thealkylthat comes frommethane; often used before anothernounin thenameofchemicalsubstances:
甲基
The fourmainparabens used aspreservativesare methyl,ethyl, propyl and butylparabens.作为防腐剂的对羟基苯甲酸酯主要有四种: 甲基、乙基、丙基和丁基对羟基苯甲酸酯。
methylbromide甲基溴
methylalcohol甲醇
SMART Vocabulary: related words and phrases
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(Definition ofmethylfrom theCambridge Advanced Learner's Dictionary & Thesaurus© Cambridge University Press)

Examplesofmethyl

methyl
Consumption and production ofmethylbromide was frozen at 1991 levels beginning 1995.
From theCambridge English Corpus
In cotyledons,methylesterification ranged from 25 to 40 mole% and was 31 mole% after desiccation.
From theCambridge English Corpus
The holes as well as the thermocouple junctions were sealed by coating them with dissolvedmethylmethacrylate.
From theCambridge English Corpus
Above this lowest aluminium block is a low-conductivity layer ofmethylmethacrylate.
From theCambridge English Corpus
This gives the best resolution ofmethylesters.
From theCambridge English Corpus
When a hydrogen atom is abstracted from themethylgroup, the cyclopropane ring of the radical produced opens up in a fast and irreversible step.
From theCambridge English Corpus
All beans were fumigated withmethylbromide prior to use in cultures to avoid contamination by other thrips species.
From theCambridge English Corpus
Although the ratios varied, the mean ratio for these two volatiles after 12 days of feeding was 4 : 1 o-nitrophenol :methylsalicylate.
From theCambridge English Corpus
However, an analysis of pectin and pectinmethylesters in developing and maturing soybean seeds has not been reported.
From theCambridge English Corpus
The mass spectra revealed that most of the branchedmethylgroups in the monomethylalkanes were located on odd numbered carbons.
From theCambridge English Corpus
Methylated spirits, a mixture of ethyl alcohol (95%) andmethylalcohol (5%) was used as the pheromone.
From theCambridge English Corpus
These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.
#https://dictionary.cambridge.org//dictionary/english/methyl##
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更新时间：2024/12/28 0:18:18