Some of the basic algorithm for data structure, such as trees, graph traversal and so on.
一些数据结构的基本算法，例如树，图的遍历等。
In the drawing graph segment, the structure sketch needed will be accomplished through drawing the selected or calculated part and this is the basic for assembly drawing.
图形绘制部分主要是对选择或计算出的部件进行绘制，完成必要的结构草图，为绘制装配图打下基础。
In the drawing graph segment, the structure sketch needed will be accomplished through drawing the selected or calculated part and this is the basic for assembly drawing.
图形绘制部分主要是对选择或计算出的部件进行绘制，完成必要的结构草图，为绘制装配图打下基础。
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