【Key words】 Computer-Aided Design(CAD); Engineering; Unified Modeling; Topological Modeling; Geometrical Model; Graphical Library; Graphical Descriptive Language; Boolean Operation; Hidden-Line Removal;
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This is a-- somewhat graphical library that allows me to display graphics on the screen.
这是一个--绘画用的库,可以让我们在屏幕上画图案。
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