This article explains the technical background and the main thought of the Software Component Hierarchy and compares it with the other extension frames.
本文简单介绍了软插件体系的技术背景和设计思路，并将它与其他一些扩展接口技术进行比较。
The system can be divided into two layers: the data access subsystem and the layout subsystem, and the design of the layout subsystem is based on SCH (Software Component Hierarchy).
系统包括数据访问子系统和排版子系统两层，排版子系统采用软插件体系进行设计。
Based on packaging carton CAD software, this paper gives a hierarchy model on component design of carton, method to realize component design, and an example of making up cartons to explain them.
基于包装纸盒CAD软件，给出了纸盒组件设计的层次结构模型和实现组件设计的方法，并以盒形拼大版为例加以说明。
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