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单词 isomer
释义
isomer
noun[C]
chemistryspecialized
uk
/ˈaɪ.sə.mər/us
/ˈaɪ.soʊ.mɚ/
any one of agroupofchemicalsubstanceswhich all have the samenumberandtypeofatomsbut in which thearrangementof theatomsisslightlydifferent between eachsubstance:
（同分）异构体
structural/geometrical/opticalisomers结构／几何／光学同分异构体
SMART Vocabulary: related words and phrases
Chemistry: types of chemical
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(Definition ofisomerfrom theCambridge Advanced Learner's Dictionary & Thesaurus© Cambridge University Press)

isomer| American Dictionary

isomer
noun[C]
us/ˈɑɪ·sə·mər/
chemistry
any one of agroupofchemicalsubstanceswhich all have the samenumberandtypeofatomsbut in which thearrangementof theatomsisslightlydifferent between eachsubstance
(Definition ofisomerfrom theCambridge Academic Content Dictionary© Cambridge University Press)

Examplesofisomer

isomer
An experimental perspective on triggering gamma emission from nuclear isomers.
From theCambridge English Corpus
These studies investigate under-well defined physico-chemical conditions synthetic routes how the simplest carbon hydrate-glycolaldehyde-and the simplest amino acid-glycine-together with their isomers can be formed.
From theCambridge English Corpus
In the other isomers, where the two groups are linked together, the carbonyl group attracts the electrons, which destabilizes the protonated amine.
From theCambridge English Corpus
If both the isomers are separated, yields decrease by 50 %, if they are not separated, distance distributions are broadened.
From theCambridge English Corpus
As can clearly be seen, the mass spectra show that the fragmentation patterns between the isomers are different for both wavelengths and polarizations.
From theCambridge English Corpus
The suffixes "-c" for cis and "-t" for trans refer to geometric isomers.
From theCambridge English Corpus
Consequently, the same isomers were studied as before, first protonated on the acid group, then on the amine group.
From theCambridge English Corpus
In particular, the possibility of exciting the nuclear states in longer-living isomers via the action of the laser-produced plasma is extremely attractive.
From theCambridge English Corpus
The detailed kinetic scheme should include transitions between many conformational isomers of the protein chain.
From theCambridge English Corpus
Non-linear excitation and decay of low-energy nuclear isomers produced under femtosecond laser-plasma interactions.
From theCambridge English Corpus
In earlier literature the different stacking forms were referred to as isomers.
From theCambridge English Corpus
Visual pigment reconstitution in intact goldfish retina using synthetic retinaldehyde isomers.
From theCambridge English Corpus
This is crucial when more isomers with the same gross formula, but different enthalpy of formation, can be produced.
From theCambridge English Corpus
Linear isomers constitute 89 % of the dimer and 67 % of the trimer fractions.
From theCambridge English Corpus
Mixtures of retinal1 and retinal2 standards were co-chromatographed with an aliquot of retinal oximes to identify isomers.
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/isomer##
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更新时间：2024/12/28 3:24:19