Taking rigid disk surface as an example, fractal parameters are obtained by means of power spectrum and structure function, providing a proper geometric model for further contact analysis.
实验结果表明，分形维数能很好地表征表面轮廓，可为进一步的接触分析提供更合理的几何模型。
In this paper, the structure characteristics of particle surface of black rice husk produced under different conditions were studied by the fractal geometry.
应用分形几何理论，研究了不同条件下制备的黑稻壳颗粒的表面结构特征。
It was shown that there exists fractal structure network in coke, and moreover, fractal dimensions of coke is decreased and coke surface becomes smooth due to anthracite addition.
结果表明：在焦炭中存在分形结构，添加无烟煤炼焦后焦炭的分形维数降低，焦炭表面变光滑。
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