This paper describes a design of a common and scalable adjusting system for train graph, including the design of data structure, graphic displaying and adjusting operation.
该文讨论了一种可复用和易扩展的运行图调整系统的设计，其中介绍了包括数据结构、图形显示及调整操作的设计。
The data structure of linear quadtree coding for two-dimension graphic data is presented.
介绍了二维图形数据的线性四叉树编码数据结构。
Symbol table is data structure which has high arithmetic complexity from whole structure and items' attribute information, and it is inconvenient for users to interact with graphic interface.
从编译程序中符号表的总体组织和表项属性信息组织来看，符号表是一种算法复杂性很高的数据结构，而且也不利于用户与图形界面的交互。
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