z-plane

OK, so you know about cylindrical coordinates z where we have the z coordinates stay z, and the xy plane we do R and theta polar coordinates.

我们知道，柱坐标中z坐标还是，而x、y坐标，我们用R和θ来表示。

Adaptive slicing is realized by the calculation of the position of tangent plane of modeling surface, the angle of between the normal section line and the slicing plane, the curvature of normal section line in z-axis direction and radius of curvature.

计算出造型曲面的切平面位置、法线与分层平面的夹角、Z向法截线的曲率和曲率半径，实现优化分层。

The area nearby Z axis is closed-type noumenon pole tracks, but all the other axes on the plane through the equator have a separate-type noumenon pole tracks linked by the pole track on the equator.

在Z轴的附近区域来说，属于封闭型本体极迹，但在赤道面上对于过原点的一切轴线，它们的本体极迹是被赤道极迹连接起来的，所以属于分离型本体极迹。