多元酸

1
[无化] polyacid
关键词：粉末涂料；聚氨酯；羟基树脂；多元酸；多元醇 [gap=393]Key words: powder coatings, polyurethane, hydroxyl resin, polyacid, polyalcohol
2
[无化] polybasic acid
刺梨果中多元酸和高级脂肪酸的分析研究关键词：刺梨果；多元酸；高级脂肪酸；气相色谱-质谱 [gap=1086]Key words：Rosa roxburghii Tratt fruit; polybasic acid; higher fatty acid; GC-MS
3
[无化] polyprotic acid
... polyprotein actioning 多蛋白加工 polyprotic acid 多元酸 polyribonucleotide 多核糖核苷酸 ...
4
polyatomic acid
... polyase 聚合酶；多糖酶 polyatomic acid 多元酸 polyatomic alcohol 多元醇 ...

短语

1
树脂是多元酸和多元羟基化合缩聚而成。
Polyester resins are the condensation products of polybasic acids and polyols.
2
目的分析刺梨果中多元酸和高级脂肪酸的组成。
Objective To analyze polybasic acids and higher fatty acids of Rosa roxburghii Tratt fruit.
3
在催化剂、链支化剂存在下多元酸和多元醇直接熔融酯化、常压缩聚合成饱和羟基聚酯。
A saturated hydroxy polyester resin has been prepared with polycarboxylic acid and polyol at the presence of catalyst and chain transfer agent by the direct melt esterification process.

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