本文介绍专家系统的概念，主要组成，较为详细地阐述了知识库和推理工具的基本内容。
This paper describes the concept and organization of expert system and explains in some detail knowledge base and inference engine.
同时也对专家系统中知识的推理和计算过程以及知识库的动态更新过程进行了讨论。
The reasoning and computing process of knowledge in expert system and the dynamic updating of database are discussed.
知识库是专家系统进行推理诊断的基础和前提。
The knowledge base is the basis and premise of expert system to make reasoning.
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