摘要
本文使三种平面坐标按一个固定关系互相配合,得到与此对应的一系列公式,为解大量的平面质点问题提供简便方法。
This paper advances a easg method for solving the problem of large amount penticles by using a series of corresponding formulas which are obtained through the fined related three coordinates of plane.
关键词
自然坐标
平面极坐标
方位角
natural coordinates polar coordirate unit nector azimuth radius of curvature
