Molecular dynamics is used to investigate the mechanical behaviour of crystal material at high strain rates in this paper.

本文用分子动力学方法研究了高应变率下晶体材料的力学行为。

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Photonic crystal is a new type of artificial crystal material with characteristic of photonic bandgap (PBG) structure, which is artificially composed of two or more dielectrics arranged periodically.

光子晶体是近年来出现的一种新的光学材料，是由电介质材料周期性排列构成的人工晶体材料。

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Extra gravity is an effective method of producing homogeneous crystal material.

超重力是制备无偏析晶体材料的有效手段之一。

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Thus, they use the same material as standard crystal silicone panel manufacturers, with two major exceptions.

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If the second material of the crystal is intended to be air, that is enough.

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At least, those are the possibilities if the material really is a crystal.

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