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结果表明：焊接接头横截面宏观结构特征表现为焊核区的“洋葱环”和热-机械影响区的塑性流线变形，洋葱环的环间距随着距焊缝中心距离的增大而减小；
The experiment result shows that the spacing of onion rings, which is the most prominent features of most friction stir welds, decreases with the distance of onion ring to centerline increasing .
研究结果表明：纳米量级尺寸是多孔硅膜的一个重要特征。估计多孔硅硅柱横截面直径在几到十几纳米之间。
It is shown that the quantum dimension with nanometer order size is an important structural characteristic of porous silicon films.
结论OCT能直观、清晰地显示特发性黄斑裂孔的横截面形态特征，同时能精确地测量裂孔的大小。
Conclusions OCT can display the characteristics of idiopathic macular holes and measure the diameters of holes quantitatively.
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