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阐述了反求工程在快速原形技术中的重要作用；分析了目前反求工程中的关键技术：数字化技术；论证了目前自由曲面重构中的两种重要方案：矩形域曲面重构、三角域曲面重构；给出了具体工程应用中方案的选择原则；最后给出了对反求工程的展望．
The important role of reverse engineering in rapid prototyping technology is expounded. The key technology in current reverse engineering: digital technology is analyzed. Two important schemes in the reconstruction of freeform surface are demonstrated: the reconstruction of the rectangular domain, Surface reconstruction; given the specific project application program selection principle; finally gives the prospect of reverse engineering.