碳环的

It may result from the coupling of acarbonyl group in one molecule with the double bond in another molecule.

它是由一分子环丁烯二酮的羰基碳与另一分子的双键β-碳发生还原偶联的结果。

From comparison results of BET and NMR, it can be deduced that CNTs were not inner hollow in their full length, but cone-capped cavums, separated by some septa, such as amorphous carbon, heptagon or pentagon rings.

通过BET吸附和129Xe NMR的结果对比分析，可以推断碳纳米管并非全部是中空的，而是被许多隔膜分隔成多个锥帽形空腔，这些隔膜一般为无定形碳，五元环或七元环。

They can exist in a chain form or in a ring formed by reaction of the ketone or aldehyde group with an – OH group on one of the carbons at the other end of the chain.

它们有链式和环式。环式结构的形成是酮基或醛基与碳链另一端的羟基发生反应而相结合。

The adducts of ethylene oxide and propylene oxide are possessed of the majority of nonionic deinking agents. They are the adducts of fatty acid and polyol and monoethanolamine.

在非离子脱墨剂中，环氧乙烷和环氧丙烷的加聚产物占了绝大部分，分别为硬脂肪酸、高碳醇和烷酰醇胺型的加成物。

The reaction takes place as soon as 3a is dissolved in solution. With the presence of a tethering terminal vinyl group bound to the vinylidene ligand, the [2+2] cycloaddition of two C=C double bonds readily occurred.

当有一乙烯基键结在丙二烯基上，分子内的两个碳碳双键会马上发生[2+2]的环化加成反应。

Also useful are oil-soluble copper dithiocarbamates of the general formula Rc RdzCu, where z is 1 or 2, and Rc and Rd are the same or different hydrocarbyl radicals containing from 1 to 18, and preferably 2 to 12, carbon atoms, and including radical s such, for example, as alkyl, alkenyl, aryl, aralkyl, alkaryl and cycloaliphatic radicals.

通用化学式为RcRdzCu的油溶性二硫代氨基甲酸铜，也非常有用。式中，z为1或2，Rc和Rd是含有1到18个碳原子（最好含有2-12个碳原子）的相同或不同的烃基根，并且包括烷基、链烯基、芳基、芳烷基、烷芳基和环脂基等。

Amino-2-methylpropanol was used as the chemical modifying reagent of fatty acids to modify the carboxyl group into nitrogen-containing heterocycle which would effectively prevent the migration of carbon double bonds of the alkenyl in the electron impact source.

以2-氨基－2-甲基－丙醇为脂肪酸的化学修饰试剂，气相色谱－电子轰击质谱分析葵子油脂肪酸。2-氨基－2-甲基－丙醇将脂肪酸羧基修改为含氮杂环，使在EI源中避免了链烯基中碳碳双键的移动。

A surface-initiated ring-opening polymerization approach was used to functionalize multiwalled carbon nanotubes with linear poly.

通过化学改性，在碳纳米管表面引入氨基，然后引发N~5-苄氧羰基赖氨酸的N~2-羧基-α-氨基酸酐单体的开环聚合，成功将聚赖氨酸接枝到碳纳米管表面。

This thesis is concerned with studies on the ring opening reaction catalyzed by gold catalysis via carbon-carbon bond cleavages.

本文主要研究了金催化碳碳键断裂的开环反应，全文共分为三个部分：第一章：对均相金催化研究进行了总结，综述了均相金催化的研究进展。

Many types of nanotubes and VGCFs, including cylindrical, spiral, ring-like and sheet-like types, were found in our study.

我们也在实验中发现许多不同形状的奈米碳管及VGCF，包括圆柱型、螺旋型、环型及片状的碳结构等。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。