依据本体论的概念论述了零件信息和制造资源信息的描述方法，给出了它们本体的定义方式。描述了零件本体和特征本体的属性，分析了各本体间和本体属性间的关系。以开发的CAPP系统为例，阐述了此描述方法在实际应用中体现出的特点。

A description method of part information and manufacturing resources information based on the ontology´s concept is introduced. The attributes of part noumenon and feature noumenon are described. The relationships among noumena and their attributes are analyzed. Finally, the practicality of the description method is demonstrated in the CAPP system.