例句與造句

1. Special emphasis has been given to the synthesis and characterization of reactive , functionally - terminated siloxane oligomers , which are the key starting materials or intermediates in the preparation of the well defined block or segment copolymers and play an important role in these reaction systems
   反應性矽氧烷是制備有機矽的嵌段或接枝共聚物的關鍵起始原料和反應中間體，在共聚物的形成中起著重要的作用。
2. It's difficult to find segmented copolymer in a sentence. 用segmented copolymer造句挺難的