adaptive assembly feature的用法和样例：
- An expression architecture for assembly feature based on ontology was presented by using Meta Object Facility (MOF).
- Product assembly feature information is extracted aut omatically from CAD system.
- It proposes and realizes a parts" rapid assembling approach based on assembly feature and assembly semanteme.
- An assembly feature matrix was established,the elements of which denote the degree of freedom(DOF) of assembly features of a part in its reference frame.