采用自上向下的模块化设计方法，将PDDC的功能划分为基本单元，实现这些功能模块并组成模块库。
Using Top-Down design method, the whole PDDC function is divided to many units implemented respectively and organized to the module library.
采用面向对象技术，以动态连接库的形式开发开放式数控系统的基本构造单元—软件功能模块。
Software modules in the form of Dynamically Linked Library using object-oriented program technology are design, which are the basic system components.
本文对标准单元库功能测试模块的设计要求进行了全面的分析，提出整体设计方案。
In this paper, it poses a comprehensive analyse on the standard cell library functional test module requirements and propose a design plan.
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