It is founded that the size of curvaturedifference envelop curve can detect that of pre-stress losses.
发现可以通过模态曲率差的包络图面积，较好的反映出预应力损失程度的大小。
2
The method that interactively extract feature points based on curvaturedifference break is proposed to complete extracting feature points.
提出了利用圆率线及圆率差分突变来交互拾取曲线特征点的方法，实现了特征点的识别和提取。
3
If the adjacent cell curvaturedifference, clarify in this range, the surface distortion is very serious, if cut and sew in here is cut off again, then divide membrane block has a great arc here will.