vitamin D 3

vitamin-d-3的词性：
n.（名词）

1. A colorless crystalline compound, C₂₇H ₄₄O, found in fish-liver oils, irradiated milk, and all irradiated animal foodstuffs. It has essentially the same biological activity as vitamin D ₂. Also called cholecalciferol
维生素D3：一种晶状无色化合物，C₂₇H ₄₄O，存在于鱼肝油、紫外线照射过的牛奶和所有经照射的动物饲料中。基本上与维生素D ₂的活性相同 也作 cholecalciferol