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。
So in order to provide the theoretical foundation for the design of rigid disk, it is necessary to research the surface topography of rigid disk.
因此有必要研究硬盘磁盘磁头之间的接触状态，以便为硬盘设计提供理论依据。
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