将极坐标系中的质点运动按照效果分解为两个等角速度的圆周运动,找到这两个圆周运动分别对应的曲率半径,并通过一组方程将径向加速度、横向加速度、切向加速度、法向加速度联系到一起,最后利用其思想处理几例典型的疑难问题. The particle movement in polar coordinate system is decomposed into two equidistant circular motions according to the effect, the radius of curvature corresponding to the two circular motions is found, and the radial acceleration, transverse acceleration, tangential acceleration, Linked to acceleration, and finally used his ideas to deal with a few typical difficult problems.