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三视图是哪三面

更新时间: 2021-02-08 18:23:17     

1、三视图是观测者从上面、左面、正面三个不同角度观察同一个空间几何体而画出的图形。

2、三视图能够正确反映物体长、宽、高尺寸的正投影工程图(主视图,俯视图,左视图三个基本视图)为三视图,这是工程界一种对物体几何形状约定俗成的抽象表达方式。

关键词: 三视图

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