Educationally, knowing the difference between static and dynamic linking is useful. 教育性的，是让大家知道静态连接和动态连接的区别。
Model contains all the information, use Dynamic Link, which can guarantee graphics are always up-to-date and consistent throughout the design flow. 模型内包含的所有信息，都采用动态连接，从而可以保证图形永远是最新的，并与整个设计流程保持一致。
