对运动学中动点动系选择原则及方法的探讨

The Discussion on the Chosen Principle and Method about Moving Particle and Moving Coordinate in Motion

本文提出了工程力学中选取动点和动坐标系的一般原则，并把点的合成运动部分的问题进行了分类，同时归纳出了各类问题中动点和动坐标系的选取方法。

The general principal of chosen meving particle and moving coordinate in engineering mechanics isdiscussed, and the problem of particle composition motion is classified, the chosen methed of moving particle and moving coordinate in various cases are deduced.