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1·In the roots, there were carboxylic acid ester and alkane.

而茅莓根的主要化学成分是有机酸酯和烷烃。

2·Carboxylic acids are known as inhibitors of urinary stones.

羧酸是泌尿系结石形成的抑制剂。

3·Carboxylic acid esters are important chemical raw materials.

羧酸酯是重要的化工原料。

4·One exception is the decarboxylation of aromatic carboxylic acids.

芳香羧酸进行脱羧反应是一个例外。

5·The esterification mechanism of unsaturated carboxylic acid was analyzed.

分析了不饱和羧酸酯化反应的机理。

6·Sulfuric acid is main catalyst for the synthesis of carboxylic acid esters.

羧酸酯的合成主要用硫酸作催化剂，但这种催化剂有许多缺点。

7·The reduction of carboxylic acid is an important reaction in organic chemistry.

羧酸的还原是有机化学中的重要反应。

8·REDOX Relationships amongst Alcohols, Aldehydes and Ketones and Carboxylic acids.

醇，醛与酮和羧酸之间的氧化还原关系。

9·The carboxylic in unknown samples was dc. termined by this method with good results.

用本法对未知氧化度样品的羧基含量进行测定，得到了较好的结果。

10·A series of novel liquid crystalline aromatic carboxylic acid compounds are synthesized.

合成了一系列新的液晶性芳香羧酸化合物。

羧基的

1·The gold-adsorbing property of the amido oximime chelate fiber of carboxylic polyvinyl alcohol is studied.

研究了侧链含羧基的聚乙烯醇胺肟螯合纤维吸附金的性能。

2·Polycarboxylate superplasticizer with carboxylic, sulfonation groups in its main chain and polyoxyethylene ether as side chains was prepared by the macromolecular reaction.

通过大分子反应，合成了一类主链带羧基、磺酸基，支链带聚氧乙烯基醚的聚羧酸系高效减水剂。

3·Carboxylic crosslinked polystyrene microsphere was prepared by F-C acylation reaction.

通过傅克酰基化反应制备了羧基化交联聚苯乙烯微球。

4·Carboxylic amphoteric starch paste had better stability against acid and alkali, shearing and better freeze-thaw stability, higher clarity.

羧基型两性淀粉的糊液抗酸碱、剪切的能力较原淀粉明显提高，透明度及冻融稳定性较原淀粉也有显著提高。

5·Analyzed characteristics were the PEO side chain length, the degree of backbone polymerization, the composition of functional groups such as carboxylic and sulfonic groups, and the purity of polymers.

主要剖析的特性为：聚氧化乙烯(PEO)支链的长度，主链聚合的水平，各功用组如羧基组和磺酸基组的成分以及聚合物的纯真度。

(1)carboxylic acid[化]羧酸