１前言目前，我们的设计工作仍停留在二维平面设计阶段，这样一来由二维而成的一大堆零件要完全依靠大脑的抽象思维去装配，零件之间是否会产生干涉是无法预知的，对于大型复杂的结构尤其如此，只有通过最后样车出来之后，才能够加以检验，而此时一旦有问题就要返修，这无疑延? 1 Foreword At present, our design work still stays in the 2D plane design stage. In this way, a large number of parts made from 2D must completely rely on the abstract thinking of the brain to assemble. It is unpredictable whether parts will interfere with each other. This is especially true for large and complex structures, which can only be tested after they have been brought out through the last prototype. At this time, if problems arise, they must be repaired. This will undoubtedly be delayed.