Creation and application of component relations language

When the components is modified and assembled in component library,the component relations is referred.For example, component B must be used in assembly if component A depended on B and A had been used in assembly.At present,the description and application of component relations are mostly realized in component model.It complexed component model,and made more difficult to realize component relations reasoning by this method.The relationship between components is extracted from component library and described by the component relation space,and the component relations language is created to realize component relations reasoning.