Surface roughness degree which represents characteristic quantity of grade of land surface roughness is nonlinear, and can be described by fractal dimension.

反映地表粗糙状况特征量的地表粗糙度是非线性的，可以用分形去刻划。

youdao

This article discussed from three-axis concrete pavement construction point of view briefly in the low-grade cement concrete pavement construction, how to control good road surface roughness.

本文从三轴式水泥混凝土摊铺机施工的角度出发，简要阐述了在低等级水泥混凝土路面施工中，如何控制好路面平整度。

youdao