A helix equation of time-varying pitch is established, revolving elliptic cylinder as equal angular velocity and rising as variable velocity at the same time.
建立了绕椭圆柱面以等角速度旋转，又以变速度上升的非定常螺距的螺旋线方程。
2
There is angular between the longer axes of the ellipse and the axes of the shaft, moreover, the angular is variable with the magnitude and the direction of the load.
本文证明该椭圆长轴和传动轴应该呈一定的夹角，而且夹角值随工作载荷的大小和方向的变化而变化。
3
The atmospheric angular momentum (AAM) variation and the Earth's variable rotation are closely related to each other. They might be applied to the verification of global circulation models (GCMs).