然后利用UG函数求取出CT切片重构的STL模型上的点到CAD模型的距离，得到误差分布。

Then, the distance between point of STL model reconstructed by CT slices and CAD model is got by UG function and the error distribution is also got.

youdao

然后利用UG函数求取出CT切片重构的STL模型上的点到CAD模型的距离，得到误差分布。

Then, the distance between point of STL model reconstructed by CT slices and CAD model is got by UG function and the error distribution is also got.

youdao