【摘要】 本文论述了参数化图形库的实现原理，建立了以尺寸叠加算法为基础的参数化图形库开发工具，利用这种开发工具建立的图形数据可以由数据库管理，方便有效。更多还原

【Abstract】 This paper describes the implementation principle of parametric graphic database, building upthe development tool of parametric graphic database based on algorithm of dimension superposition and use it to set up graphic data which can be managed by the database conveniently.更多还原