知识贝壳
知识贝壳
所属栏目：英汉双解有机化学
Swiss organicchemist. Karrer was famous for his workon vitamins and vegetable pigments. In1930 he determined the structure of caro-tene. In 1931 he synthesized vitamin A,having worked out the structure. Karrerwas aware of the similarity between thetwo mol ......（本文共 771 字 ） [阅读本文] >>