This article discusses what the real-time expert system means, why the research on them is to be stressed and in what the real-time expert systems are different from the conventional ones.
在本文中，我们首先讨论了什么是实时专家系统，研究它的理由及其与通常所说的专家系统有何不同。
Around the real time expert systems time order, time variable and timing, the kernel technology to design and build this system is discussed in the paper.
本文围绕实时专家系统的时序性、时变性、时效性等特征，从系统设计与实现两个方面讨论建造该专家系统的一些关键技术。
Functions of most domestic DRS systems are not perfectly developed at present. Some DRS systems have no real-time module, lack of well-developed FAQ database or short of expert-dispatched.
目前国内大多数数字参考咨询服务系统的功能还不尽完善，有些系统没有实时咨询模块，有些系统则缺乏完整的常见问题库或没有专家调度。
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