查询词典 carboxyl group

Oleanane-type triterpene with a carboxyl group at C-14 is present in a limited number of natural resources.

齐墩果烷型三萜与羧基在C - 14 ，是目前在数量有限的天然资源。

The results showed that technique conditions were temperature 80 ℃ and time 2 h, the content of carboxyl group increased with the increase of amount of the carboxylation agent and the conversion was more than 60%.

结果表明：在反应温度80℃、反应时间2h的工艺条件下，随着羧化剂用量的增加，HCTPB的羧基含量增加，且转化率都在60％以上。

The activities of carboxyl group on connect black and furnace black is different.

分散效果随接枝聚乙二醇分子量的不同而存在差异。

Each fatty acid consists of a hydrocarbon chain with a carboxyl group at one end.

每个脂肪酸由一端带有一个羧基的碳酸链组成。

The grafting mass percent of connect black is more than of furnace black because of difference in carboxyl group content.

实验结果表明，较高的分子量有利于炉法炭黑的分散。

Removal of a carboxyl group from a chemical compound, usually with hydrogen replacing it.

脱羧作用从一化合物中脱去羧基，通常是用氢来替换

Selective enzymatic synthesis of drug derivatives containing carboxyl group in non-aqueous media was also developed.

论文发展了非水介质中含羧基药物衍生物的酶促选择性合成方法。

Free carboxyl group was determined by the wet chemical analysis method, acid-base titration, in this paper.

在几种测定方法—氢氧化钠直接滴定法、氢氧化钠反滴定法、醋酸钙法中，醋酸钙法较好。

After purification and analysis by IR it is found that carboxyl group has been grafted into sodium lignosulfonate.

GCL2的羧基含量从0增至0.0067mol/g，数均分子量从7467降至3951，分散度从1.329降至1.183。

In addition, there is a free non-coordinated carboxyl group (CH_2COO~-) in the complex anion ~(3-).

其中的 COO~-是一个未参与本位的可用于偈的自由羧酸基。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。