| 词汇 | alkyl |
| 释义 | alkyl noun[ C ] chemistry specializeduk /ˈæl.kɪl/ us /ˈæl.kɪl/ a group of atoms that consist of an alkane that has had one hydrogen atom removed; often used before another noun in the name of chemical substances: 烷基，烃基 an alkyl iodide一种碘代烷 an alkyl ammonium salt一种烷基季铵盐 Chemistry: types of chemical acid salt aerogel albumin alkali metal alkaline alkaloid antioxidant carbohydrate inorganic isopropanol ketone lectin melamine methyl orange monosaccharide mothball propellant saline soluble sulphide Examples of alkylalkyl Such species can generate secondary products such as alkyl hydroperoxides and lipid peroxides. The active ingredient of these products is amyl nitrite, one of a group of chemicals known as the alkyl nitrites. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 The second category was that of compounds derived from phenethylamine by alkyl or other substitution in the aromatic ring. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 The research octane numbers in this specification have remained unchanged with the reduction of the lead alkyl content. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 Use of alkyl nitrites is likely to be rare in these populations. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 There is no clear evidence that use of alkyl nitrites causes cancer in humans. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 Covalent lead compounds such as tetra alkyl lead compounds which are used as petrol additives are excluded from its scope. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 More specific tests include analysis for alkyl cyclobutanones and electron spin resonance analysis. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 First, compounds derived from tryptamine, or from ring-hydroxy tryptamines which have been substituted at the nitrogen atom of the side chain by an alkyl group or groups. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 The report from our current research on the effects of sewage effluent on fish, will include some data on levels of alkyl phenol ethoxylates in rivers. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 This enzyme belongs to the family of transferases, specifically those transferring aryl or alkyl groups other than methyl groups. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Reaction vessels are typically charged with the two monomers, a free radical generator, and a chain transfer agent such as an alkyl mercaptan. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Solubility in water can be estimated from the number of hydrogen bond donors vs. alkyl sidechains in the molecule. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. 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. |
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