最后，根据World WideWebConsortium (W3C)的说明，本体定义用于描述和表示知识领域的术语。
Finally, according to the World Wide Web Consortium (W3C), ontology defines the terms used to describe and represent an area of knowledge.
为此，文中用面向对象的知识表示方法描述并建立本体，并以此为基础形成领域操作代数系统和智能体服务描述语言。
The paper describes and develops ontology by object-oriented knowledge representation, hence the representation leads to domain algebra system and agent service description language.
本体是精确的概念化规范，是知识表示和知识组织的一种重要方法。
An ontology is a specification of a conceptualization, and it is very important for knowledge expressing and organizing.
然后介绍了描述逻辑和基于描述逻辑的本体表示语言alc，举例说明了ALC表示的本体知识库。
Then introduces emphatically description logic and language ALC based on description logic, giving example for the ontology-based knowledge base.
对产品知识进行了层次化的表示，并借助ODLBKIF和基于角度知识描述语言进行了说明。同时，给出了基于本体论的知识推理方法。
The hierarchical denotation of product knowledge is demonstrated by means of ODLBKIF and the described language based on aspect knowledge.
对产品知识进行了层次化的表示，并借助ODLBKIF和基于角度知识描述语言进行了说明。同时，给出了基于本体论的知识推理方法。
The hierarchical denotation of product knowledge is demonstrated by means of ODLBKIF and the described language based on aspect knowledge.
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