在面向对象技术中，对象能在单个实体中封装数据和操作(方法)，并为知识和被模拟领域中的实体的表示提供条件。
With the object-oriented technology, an object is a single entity in which data and methods are capsulized. It can be used to represent knowledge or entities in simulated domain.
语义网络作为一种模拟人类的语言的知识表示方法，在开发智能系统和机器学习领域中具有重要的地位和作用。
As the knowledge representation methods simulating human language, semantic network has significant impact and position in intelligence system development and machine learning fields.
系统用产生式规则表示知识，采用正向推理策略，较准确地模拟了专家的施治过程。
This system expresses knowledge producing rules, puts to use reasoning machanism of combining positive direction with opposite direction. It imitates expert diagnosis process exactly.
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