Founding a rational and effective knowledge express model is the key point of ICAD system.
建立一个合理而有效的知识表达模型是智能CAD系统成功的关键。
The expert system of optimization of machining parameter make use of object oriented mode to strengthen the power of system in knowledge express and improve efficiency.
切削用量优选专家系统使用面向对象的框架表示方式，以增强系统的知识表达能力，提高系统效率。
Based on logical knowledge express model, virtual workshop scheduling system knowledge base are established, and knowledge for scheduling are expressed in rule form.
由逻辑型的知识表示模式构造虚拟车问调度系统知识库，知识库内存放的知识以规则的形式表示。
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