The meeting had all the ingredients of high political drama.这次会议具备了作为高度戏剧性的政治事件的一切要素。It is listed among the ingredients on the package.它是包装盒标明的成分之一。Cognac is also used to macerate and flavour ingredients and casseroles.干...
聚羟基乙酸的经典制备方法主要有两种:直接缩合聚合法和乙交酯开环聚合法.There are two means available for the preparation of PGA - synthesis polymerization and ring - opening polymerization....