However, how to realize resource co-construction and sharing among different digital libraries that are structural isomerism is an urgent problem needs to be solved.

• 然而，如何实现各个操作系统不同、运行平台各异、分布的、多个异构数字图书馆间的共享与集成是一个非常迫切的问题。解决该问题的关键是如何将现有数据资源进行有效的整合。