单凸轮连杆组合机构可克服上述缺点，即可以方便地再现预定轨迹并有精确解，但其缺点是难以实现内凹曲线的轨迹复演。

Single CAM linkage mechanism can overcome the shortcomings mentioned above, however the new problem is that the mechanism can not generate the path which has concave curve.

youdao

各向异性的伤演规律可由能量平衡及当量单参数方程所确定。

The anisotropic damage evolution law is obtained by the virtue of energy equilibrium and an equivalent singe variable equation.

youdao