Analyzing the motion inversion of the limit of the crank rocker mechanism, drawing the relative supplementary circle, and designing the mechanism up to requirement.
对曲柄摇杆机构极限位置进行运动倒置分析，作出相应辅助圆，从而设计出满足条件要求的机构。
2
Inverson of circle: Into a circle, if the circle pass through inversion center o, it becomes a straight line.