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众所周知,渐开线是由发生线M—M在半径为rb的基圆上纯滚动时,发生线上任一点B的运动轨迹(图1),其参变方程式为:
It is well known that the involute curve is generated by the occurrence of a line M-M purely rolling on the base circle of radius rb at any point B on the line (Figure 1)