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The digital library has characteristics of activation of information documents, logicality in the structure and management, duplexity of information transmission mode, high abstrusity in language.

数字图书馆具有文献信息载体活化、馆藏结构和管理逻辑化、信息传递模式全双工化、语言高度抽象化等特征。

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That shows it's such kind of book with abstrusity, then what the reason for and how to resolve the problem?

那么这个难解性的原因何在，如何解决这个问题。

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Therefore, complexity knowledge that originates from the intricate social practice and points at the complexity system is different from the universal, definite simple knowledge, and it has many characteristics such as indefiniteness, situation, integrity, questionable, abstrusity, etc.

产生于大规模的复杂社会实践并指向复杂系统的复杂性知识也不同于普适、确定的简单性知识，它具有不确定性、境域性、整合性、涵疑性、深奥性等特征。

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