Web ontology language(OWL) is an important part of semantic Web technology,which has been used for describing and modeling complicated data widely.

However,as the variety of internet language,the deep research on its explicit various manifestations is very limited.

Approach of Semantic Network for Representing Feature Based Knowledge of Part;

Chemical Domain Concept Retrieval based on Semantic Network;

The Expression of Pathology Diagnosis Case and the Research on Uncertainty Based on Semantic Network;