【摘要】 介绍了三维图形库建立的必要性、设计目标、建库的方法与技巧,以及三维CAD图库的结构与内容,给出了一个应用实例.结果表明,该图库便于实现抽油机产品的快速设计.更多还原

【Abstract】 A brief introduction for the necessity, project intention, structure and contents, methods and some techniques of developing the three dimension standard drawingbase is given; an example using the drawingbase is offered.It is convenient for designer to accomplish the fast design of pumping unit by using the drawingbase.更多还原