Polar motion is the movement of the rotation axis with respect to the crust.

极移指自转轴相对地壳的运动。

The points (350) are offset (r) with respect to the rotation axis (65) of the rotor (100).

点(350)相对转子(100)的旋转轴(65)被偏置。

The key point for re-constructing rotation surface is setting up rotation axis and generatrix.

旋转面重建的关键是确定旋转轴和母线。

Positive values for the angle rotate the object clockwise if you look along the positive rotation axis.

角度为正值，则表示若您顺着正旋转轴方向观察，对象是按顺时针旋转的。