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根据柴油机螺旋进气道的空间形状特征，运用Belier曲面拟合和ADS技术，在AutoCAD下实现螺旋进气道结构计算机三维造型，为柴油机的螺旋进气道的计算机辅助设计和辅助制造提供了现代方法和手段．
According to the spatial shape characteristics of the diesel inlet, the Belier surface fitting and ADS technology are used to realize the three-dimensional modeling of the spiral inlet structure in AutoCAD, which provides the modern CAD-assisted design and auxiliary manufacturing for the diesel inlet Methods and means.