中文摘要：

通过分析注射模修模方案表达特点，给出了一种基于层次模型（FCHM）的修模工艺方案描述方法与工艺规则知识表达方法，实践证明该方法可以有效提高修模案例资料的搜索速度，为进一步实现注射模修模工艺的知识归纳奠定了基础。

英文摘要：

After an analysis on the representation feature of injection mould modification scheme, a descriptive method for injection mould modification scheme and the knowledge representation of process rules, which are based on the feature and concept hierarchy model （FCHM）, were put forward. The application indicates that the method can help the engineers improve the search rate on injection mould modification scheme and lay a foundation for inducting the data of injection mould modification cases.