Euler solved this problem in 1736. He changed this problem into the first graph theory problem by abstract analyzed method.
欧拉在1736年解决了这个问题，他用抽象分析法将这个问题化为第一个图论问题。
A progressive representation model for street networks of vector data was presented based on the theory of plane Euclidean graph and abstract complex cell.
基于平面欧几里得图和抽象胞腔复形理论，提出了街道网矢量数据的渐进式表达模型。
Abstract: Based on the construction schedule network planning, this paper puts forward the idea and draw steps of compositive horizontal line graph to construction schedule.
[摘要]在工程施工进度网络计划基础上，提出绘制施工进度计划综合横道图的思路及绘制步骤。
Visualization of abstract data Relations is aimed mainly at visualizing data structure, and graph is the most general and frequent used data structure.
抽象数据关系可视化主要是针对于数据结构的可视化，而图是应用最一般且最广泛的数据结构。
The idea of abstract from ladder diagram to AOV graph list and its realization algorithm is introduced.
阐述了将梯形图映射为AOV图链的思想与实现算法。
We analyzed the abstract syntax tree represent of GCC, the optimization on the call-graph, and the approach to the command-line arguments.
在此基础上，分析了GCC的前端树表示、基于调用图的优化模式、GCC的命令行参数处理机制，并提出了一个跨文件编译模式模型。
Objects in CAI are united using object-oriented technology and data abstract, and two abstract objects-graph and function object are formed.
利用面向对象技术，通过数据抽象将CAI中不同的对象统一起来，形成两个抽象对象图形对象和功能对象。
Through the graph we can also find every group's changing curve, from which then we abstract the rules for the four groups . At the same time, every group's developing trend will appear or be fore…
本文以眼镜为例，从历代流行眼镜分类分析的基础上寻找各种类型的变化规律，从而对未来流行性产品变化趋势进行预测，以期对当前我国流行性产品的开发提供借鉴。
Through the graph we can also find every group's changing curve, from which then we abstract the rules for the four groups . At the same time, every group's developing trend will appear or be fore…
本文以眼镜为例，从历代流行眼镜分类分析的基础上寻找各种类型的变化规律，从而对未来流行性产品变化趋势进行预测，以期对当前我国流行性产品的开发提供借鉴。
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