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提出用复合运动理论分析运动时选取动点动系的两条原则;对常见类型作了分析,纠正了文献认为两点间的相对运动与动系运动形式有关的错误;讨论了相对轨迹在分析运动中的作用;最后给出了八种机构按不同方案选取动点动系时的相对轨迹。
The paper analyzes the two principles of analyzing kinematics of moving point system by using the theory of compound motion, analyzes the common types, corrects the errors which the literature considers that the relative movement between two points is related to the motion form of moving system, Motion; Finally, the relative trajectories of eight kinds of agencies when selecting moving point system according to different schemes are given.