The feature, structure and function of a automatic design system ZZDGS for free forging technique are introduced and treatment of some key problems in systematic development is demonstrated.
介绍了锤上自由锻工艺自动设计系统ZZ DGS的特点、结构及功能，并重点说明了系统开发中几个关键问题的处理方法。
This article expounded the development, systematical structure and core technique of the thermophysical experiment teaching system based on VRML.
阐述了基于VRML的工程热物理虚拟实验教学系统的开发方法、系统结构及关键技术。
The system adopts an upper - lower structure and touch screen technique. A great development in electric control theory of the vacuum - forming machine is made.
该系统采用上下位机形式的结构以及触摸屏技术，实现了真空成型机电气控制技术的新突破。
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