A tough, insoluble protein substance that is the chief structural constituent of hair, nails, horns, and hoofs.
英
美
- 角蛋白一种不溶解的较硬的蛋白物质，是头发、指甲、角和蹄的主要结构成分
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries
