介绍了工艺知识表达、获取和管理技术，以及推理控制策略、解释机制，及其在CAPP系统中的应用。
Process knowledge expression, obtain, management technology, inference control strategy, explanation mechanism, and the application of they are used in CAPP system are introduced.
在已有的英语语义词典及大量训练集的基础上，应用机器学习、数据挖掘等技术进行知识获取并最终形成若干个概念推理网。
Machine learning and data mining techniques are applied to acquire knowledge and build a concept reasoning network based on semantic dictionary and large training set.
提出将数据库理论中版本管理技术应用于设计类专家系统的事实库管理，讨论了事实库版本管理对推理所产生的作用。
Version management technology is applied to manage fact base of an expert system and the role of the version management system of facts in reasoning is also discussed.
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