优化钻井知识库系统的研究与开发关键在于系统及其知识库模型的建立。

The focus on the research and development of knowledge base system on drilling optimization was to establish its knowledge base modeling.

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根据工艺设计知识库的开放性要求，提出了一个基于开放式结构的层次化知识库模型。

According to the openness of process planning knowledge base, this paper proposes a hierarchy knowledge base model based on open structure.

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该系统从历史故障数据所形成的决策表出发，运用粗糙集理论进行约简，构建专家系统知识库模型。

From the decision table defined by history fault data, we reduce the decision table in rough set theory and build the knowledge base model of expert system.

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