“通过设计掺杂物的性质，形状和密度，你可以获得一些，在整体性质上，在自然界中不同寻常而且难以得到的东西。”Engheta说。

"By designing the properties of the inclusions, as well as their shapes and density, you achieve in the bulk property something that may be unusual and not readily available in nature," Engheta said.

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因昔格达地层具有特殊的地质结构和物理力学性质，该地层中产生滑坡的密度在我国易滑地层中名列前茅。

Landslide density at Xigeda strata is among the best of facility-sliding stratas in China, because of the unique geological structure and physics-mechanics characteristic of Xigeda strata.

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核子密度分布是原子核的一个重要性质。

Nucleon density distribution is one of the most important characters of an atomic nucleus.

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