Cutting force, grinding force and surface roughness of grinding are the most important parameters to scale machine progress, thus precision methods for them is needed in engineering.
Relief, roughness and variance coefficient in elevation are main index in macro scale.
在宏观尺度上，以地形起伏度、地形粗糙度、地形高程变异系数为主。
3
Experiments indicate that the fractal scale, together with the fractal dimension can effectively reflect the fractal scale range of natural textures and the texture roughness within the scale range.