| 摘 要： | The propagation and full application of the three-dimensional （3D） computer-aided design （CAD） software by mechanical engineering and industrial design courses is a fact. However, many students find it difficult because they have not previously developed a spatial vision and do not understand the internal process of the software to build 3D models. This work aims at showing the image generation process on the computer screen, inducing the students to, mentally, generate 3D model projections, improving their spatial vision, and speeding up the process of interpreting orthogonal and isometric perspective views.
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