By taking the propylene polymerization process as the research object, a method of constructing the knowledge base of the abnormal situation self-recovery system was presented.
以丙烯聚合过程为研究对象，给出了构建丙烯聚合过程非正常工况自愈调控系统知识库的方法。
At last, we present the difficulty and some problems confronted while constructing domain knowledge base and propose some assumptions in the future work.
最后指出了在构建“领域知识库”过程中面临的困难和存在的一些问题，并提出在未来的构建工作中的一些设想。
While constructing domain knowledge base, ontology-based hierarchical categorization system of domain knowledge base is our main research topic.
在构建领域知识库的过程中，领域知识库的层次分类体系的构建工作就成为我们重点要研究的内容之一。
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