1·An uncommon class of organic esters are the orthoesters.
一种不常见的有机酯类是正构脂类。
2·Not recommended for use in chemical acid, nitro hydrocarbons, esters, ketones and compounds in chloroform.
不建议使用于强酸、硝基烃、酯类、氯仿及酮类的化学物之中。
3·The advantage of esters is that they substitute directly for petroleum-based diesel fuel.
酯类的优势是它们直接替代了石油制柴油燃料。
4·Do not recommend the use of low molecular weight in ketones, esters and mixtures containing nitrate.
不建议使用于酮类、低分子量的酯类及含硝的混合物。
5·The heat of evaporation for various kinds of alkanes, alcohols, esters and aromatics were determined by gas chromatography.
本文用气相色谱测定了多种烷烃、芳烃、醇类和酯类的蒸发热。