【摘要】 论述了工程数据库的特点及其在ＣＡＤ中的地位和作用，并以液压启闭机ＣＡＤ系统（ＨＧＨＣＡＤＳ）为例，介绍一种以工程数据库为核心建立ＣＡＤ系统的方法。更多还原

【Abstract】 This paper discusses the characteristics of engineering database and its importance in the process of computer aided design. Then, as an example by Hydraulic Gate Hoist CAD System, we introduces a method to create the CAD system which focuses on engineering database.更多还原