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对数字图书馆（ Ｄｉｇｉｔａｌ Ｌｉｂｒａｒｙ， Ｄ Ｌ）研究中的关键技术：数字图书馆的系统模型、多媒体网络、多媒体同步模型和分布式多媒体数据库技术等进行了较为详细的讨论、分析和研究，并针对数字图书馆系统的具体应用提出了相应方法和策略，并实现了一个 Ｄ Ｌ原型系统。
A detailed discussion, analysis and research are made on the key technologies of Digital Library (DL) research, such as the system model of digital library, multimedia network, multimedia synchronization model and distributed multimedia database technology. The specific application of digital library system puts forward corresponding methods and strategies, and realizes a D L prototype system.