Existed graph will be interpreted to parametric graph to offer graphic samples for intelligent CAD design methods, such as case based design and prototype based design, etc.
为了给基于实例的设计和基于原型的设计等智能CAD设计方法提供图形样本，需将已有的图形参数化。
With corresponding classification, the usual methods are inherited and modified, the key information in data can be exposed more effectively based on simpler steps and single graph.
对应分类法继承和改善了常规方法，能用较简单步骤和单一图件更有效地揭示数据中的核心信息。
This paper mainly concerns the properties of Hamilton graph and some methods of judgment based on them.
本文探讨了哈密顿图的性质，并根据这些性质给出了若干种判定非哈密顿图的方法。
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