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21food.cn
20 天
(维生素A生产厂家)
维生素A在分类中属于脂溶性维生素,同属于脂溶性维生素的还有维生素D(又称钙化醇)、维生素E(又称生育酚)和维生素K(又称凝血维生素);另一类是水溶性维生素,主要是B族维生素(主要包括 ... 中);另一种是胡萝卜素(carotene),在体内转变为维生素A ...
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