根据分析所得的动、静应力分量，采用有限元与圆弧滑动法相结合的有限元一圆弧法，分析了挡土墙的抗滑稳定性。
The stability factor of retaining walls is analyzed with the finite element and slip circle method, which is based on the results obtained by static and dynamic FEM.
对圆弧型指尖密封构型特征进行了分析，确定了型线圆弧半径与圆弧中心圆半径的关系及取值范围；
The geometric feature of the arc finger seal is analysed. The relationship between the finger stick arc radius and the stick arc center circle radii and their value scope are determined too.
再根据所计算的拟合圆与凸轮曲线的偏差用最小二乘法拟合以得到其余各圆弧段；
Then fitting the deviation in calculated fitting circle and cam profile curves, the remaining arcs were gotten. Finally the whole circle fitting and NC programming were realized.
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