provitamin concentrate维生素原浓缩物
Provitamin D3原维生素D;维生素D3原;维生素D3前体
provitamin detail维他命原
provitamin a维生素A原;胡萝卜素
Provitamin D维生素D原;原维生素D
Provitamin B右泛醇;右旋泛酰醇
provitamin D2原维生素D
provitamin a carotenoid维生素A原类胡萝卜素
provitamin a carotenoids前维生素A类胡萝卜素
N(名词) a substance, such as carotene, that is converted into a vitamin in animal tissues 维生素原