The crushed stone cement base is a semi-rigid surface structure adopted widely at present.

碎石基层是目前被广泛采用的半刚性路面结构。

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Earth's surface consists of rigid plates that are constantly shifting and jostling one another.

地球表面由不断移动和相互碰撞的刚性板块组成。

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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。

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The MM600 is double-sided mat designed with foundation of a solid piece of 3mm thick aircraft-grade aluminum to provide a flatter, more rigid surface and no-slip rubber corners to minimize slippage during frenzied gaming sessions.

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According to tectonic theory, the surface of the Earth is made up of a patchwork of massive rigid plates, about 80km (50 miles) thick, which float in slow motion on top of the Earth's hot, pliable interior.

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