In chapter two, the dispersion of a type of slow-wave structure and the photonic crystal band gap structures are discussed in this chapter.

第三章先介绍了一种新型的全金属慢波结构，并对具有光子晶体带隙结构的慢波结构作了分析。

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FDTD method has less calculation, precision result, and dynamic distribution of electromagnetic, so it is suitable for calculating photonic crystal band gap.

FDTD方法计算量小，结果较为精确，还可模拟电磁场的动态分布，很适合计算光子晶体光子带隙。

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You all know how when you take a crystal prism and pass a beam of sunlight through it, you get a spectrum, which looks like a continuous band of rainbow colors.

你们都知道，拿起一个水晶棱镜，让一束阳光通过它，就会得到一个光谱，看起来就像一条连续的彩虹色带。

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The Phosphor Reveal line offers six style choices: pink, red, white and black patent leather for women with crystal-adorned face frame, and two black matte leather men's band choices with or without adorned top ring.

ENGADGET: Phosphor's Reveal wristwatch uses Swarovski crystals to tell time, bedazzle you

The lake region and its many streams, called Band-e-Amir, boast some of the most beautiful landscape in Afghanistan including crystal-clear waterfalls cascading over naturally formed dams that keep the lakes in place.

NPR: Amid War, Afghanistan Builds Its First National Park