“图纸即语言，毫米见真章。”在车间、设计院、高校实验室，精准度就是生命线。过去一年，我们联合三家计量院、两家装备厂，把十万张零件图丢进五款主流CAD里反复比对，从坐标漂移、尺寸链闭合到曲面轮廓度，逐项打分，最终拼出这份“满分优选榜单”。

“今晚到底用哪款CAD才能把AI指令预测玩出花？”——如果你也在加班到深夜时对着屏幕这么嘀咕过，这份榜单就是给你的深夜食堂。我们拉来五位主流选手：CAXA、AutoCAD、SolidWorks、Creo、中望3D，让它们在同一个图纸、同一套AI预测脚本里跑分。结果如何？

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Constraint-based sketcher extension for Blender that allows to create precise 2d shapes by defining a set of geometric constraints like tangent, distance, angle, equal and more. Sketches stay editable ...

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