The strength dispersivity and the size effect of ceramics appearing as structure material, are one of the problems to be faced with.

陶瓷作为结构材料，强度离散及尺寸效应是所面临的主要问题之一。

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That 3-D data then got plugged into a solid-modeling program where engineering parameters such as material, thickness and structure were assigned to the shape.

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Haofei Shi, the report's lead author, said the material "acts as a perfect black cloth that can completely conceal the 3D structure of the object".

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