Besides, in this paper the method to achieve the automatic data retrieval in standard item handbook is expounded, and with some actual examples the application way in computer-aided design of hydraulic cylinder is illustrated, too 除此之外,文中还论述了标准件手册数据检索在autolisp语言中的实现方法,并通过实例说明了它在液压缸计算机辅助设计中的应用方法。