Their salts, their esters and ethers;

它们的盐类；它们的酯类及醚类；

Esters, alcohols, aldehydes, and lactones were the major constituents.

主要成分为酯类、醇类、醛类、内酯类化合物。

The aim of the research was to investigate esters in Rugao ham.

为了研究如皋火腿中的酯类物质。

The pollutant of high boiling point acids, esters, sugar and ethanol;

高沸点酸类、酯类、糖类、醇类等污染物；

Acrylate copolymer emulsions are the products of acrylate or methacrylate which reacts with other vinyl esters through emulsion polymerization.

丙烯酸酯类共聚物乳液是丙烯酸酯类或甲基丙烯酸酯类与其它乙烯基酯类单体进行乳液聚合的产物。

The hydroxyl groups can be changed into esters, ethers, acetals and ketals, etc.

最常用的羟基保护基可归纳为三类：酯类、醚类和缩醛或缩酮类。

The hydroxyl groups can be changed into esters , ethers , acetals and ketals, etc.

最常用的羟基保护基可归纳为三类:酯类 、 醚类和缩醛或缩酮类.

Objective: To study the bioactive constituents, quinic acid esters, from Siphonostegia chinensis.

目的：对中药北刘寄奴中奎尼酸酯类活性成分进行化学研究。

Objective : To study the bioactive constituents, quinic acid esters, from Siphonostegia chinensis.

目的: 对中药北刘寄奴中奎尼酸酯类活性成分进行化学研究.

The separation, purification and color improvement of AGS esters plasticizer were studied.

对混合二羧酸（AGS）酯类增塑剂的分离提纯、色泽改进进行了研究。