论述了该专家系统的结构、多种知识表达方式和推理策略。
We discussed the expert system structure, manifold of knowledge representation, and the inference strategy.
根据系统改造设计中所需的领域知识，建立了相应的专家系统知识库及表达形式，设计出正反混合推理的控制策略。
The correspond to oil field experience expert system knowledge base and expression have been established, positive and negative mixed inference control strategies have been designed in this system.
在构造工艺设计子任务分解策略的基础上，对专家系统中基于固定程序推理所存在的问题进行了论述。
First this paper structures the sub-task dividing strategy of process planning, Then the problems for the existence of fixed program reasoning in expert system are analyzed.
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