附加自由曲面特征
freeform feature with attachment
大型对称自由曲面
large symmetrical freeform surface
仿自由曲面法
resembling freeform surface method
光学自由曲面
freeform optical surface
Optical Free-form Surface
Optical free-form surfaces
模型控制分析自由特征解方法
Model control analysis method of free eigensolution
双三次自由曲面
double thrice free surface
自由曲面逼近
free-form surface approximation
自由曲面测量
Free form surface measurement