Polyester resins are the condensation products of polybasicacids and polyols.
树脂 是多元酸和多元羟基化合缩聚而成。
2
Objective To analyze polybasicacids and higher fatty acids of Rosa roxburghii Tratt fruit.
目的分析刺梨果中多元酸和高级脂肪酸的组成。
3
Simulated sample and mixed reaction solution of polybasicacids are analyzed in comparison with the results of ion-chromatography. The calculation error is less than 7%.