如果是分段光滑的，即是由几段光滑曲线连接起来的。
If is piecewise smooth, that is, consists of several smooth curves joined together.
利用二阶的非线性扩散方程进行图像去噪易产生具有“阶越效应”的去噪结果，也即使分段光滑的图像变为分段常量的。
Image denoising with second order non-linear diffusion PDEs often leads to an undesirable staircase effect, namely, the transformation of smooth regions into piecewise constant ones.
本论文报道对一些分段光滑经典系统和其中之一所对应的量子系统特性的研究。
This thesis reports a study on the characteristics of some piecewise-smooth classical systems and the quantum system corresponding to one of them.
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