论文首先提出了一种具有更高灵活性的三维光子晶体结构，并分析了其能带结构和缺陷模特性。
First, we propose and analyze a novel 3-dimensional photonic-crystal which is capable of further exploring the design flexibility of any band-gap structure.
“电脑断层扫描术”能够记录零碎面料的三维结构和所有的扭结和缺陷。
Computerised tomography allows the three-dimensional structure of the fibres in such scraps to be recorded, with all their kinks and imperfections.
这场危机充分暴露了现有国际金融体系和治理结构的缺陷。
The current crisis fully exposed the deficiencies in the existing international financial system and its governance structure.
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