乳糖是乳的主要碳水化合物.Lactose is the main carbohydrate occurring in milk.乳糖产生葡萄糖和半乳糖.Lactose gives glucose and galactose.碳水化合物部分由半乳糖,葡糖胺, 岩藻糖和唾液酸组成.The carbohydrate portion is made of gala ctose, glucosamine, fucose and sialic ac...
此反应属分子内反应,因而快速且干净利索.The reaction is intramolecular and hence fast and clean.该体系合成的丁苯共聚物具有均匀的分子内和分子间分布.The prepared random SBR has uniform inter ? and intramolecular composition distribution.构象的变化改变了分子内的螺旋方向,因此,旋光方向随之改变.S...