So, first it's concentric circles that tells us that we have a shape that's a solid of the graph is going to be a surface of revolution. Things don't change if I rotate.

因此，首先它是一些同心圆，这告诉我们,这个图形是一个旋转得到的曲面,当旋转它的时候并没有发生变化。

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"We're on the brink of a new lighting revolution," says Jerry Simmons, head of the solid-state lighting programme at America's Sandia National Laboratory.

美国桑地亚国家实验室固态照明项目首脑Jerry Simmons称，“照明技术革新即将濒临”。

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Then combined with teaching example, detailed analysis on intersection curve of normal revolution solid is provided, theoretical basis is advanced for computer graphics.

并结合实例，细致的分析了常见的回转体相贯线，为计算机绘图提供了理论依据。

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Finally storage tiering and the combinations of storage and memory are undergoing a revolution as flash memory and perhaps other solid state storage technology such as MRAM find niches in more and more devices.

FORBES: Storage System Trends for 2013 and Beyond