horny substance meaning in English
角质
Examples
- Chitosan is the product of partial deacetylation of chitin they are the second most abundant polysaccharides in nature , comprising the horny substance in the exoskeletons of crabs , shrimp , and insects as well as fungi
背景和目的几丁质是由n -乙酰葡萄糖胺组成的多糖，它是世界上除纤维素之外含量最丰富的天然多聚物。