它是由有机二异氰酸酯或多异氰酸酯与二羟基或多羟基化合物加聚而成。
It is made of organic diisocyanate or polyisocyanate with two hydroxyl groups or polyhydroxy compounds together with.
总酚提 取物主要包括对羟基苯乙醇、3、4-二羟基苯乙醇、红景天苷以及以 其为母核的糖苷类化合物和其它衍生物。
The total phenol extract mainly contains hydroxyl mandelic, 3, 4-dihydroxy phenylethyl alcohol, salidroside and indicant compound and other derivatives with salidroside as the mother nucleus.
聚胺酯泡沫通过多羟基化合物上的羟基和二异氰酸酯反应形成。
The foam was prepared through a reaction of the hydroxyl groups with diisocyanate.
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