The mathematical models on turning resistancemoment of the wheels and apron against ground are put forward.
提出了车辆转向时，车轮转向阻力矩及围裙转向阻力矩的数学模型。
2
Theoretical study shows that the ratio of revolution velocity to rotation velocity will affect the magnitude and direction of resistancemoment of all the cutters.
理论分析表明：行星轮公转与自转的速比，影响着每个切削刀具的阻力矩的大小与方向；
3
By the kinematic analysis of flow, and the analysis of drive moment and resistancemoment, the rotating speed expression of self-rotating twisted tape was deduced.