原纤维可能已经完成了层状晶体。

The protofibril may have completed lamellar crystal.

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对含有点缺陷的不完整晶体，通常使用原子簇方法或超原胞模拟计算方法。

For imperfect crystals with point defects, the cluster method and the supercell simulation are two methods in common use.

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利用平面波展开方法与超原胞方法研究了两种不同晶格的光子晶体异质结的界面态。

We have investigated the guide modes in two kinds of two_dimensional photonic crystal heterostructures by using the plane wave expansion method combined with the supercell technique.

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