"The center of the earth is literally a crystal," said Stephenson. Over time, it grew and now is no longer a single crystal but an aggregate of them.

“地球的中心严格意义上是一个晶体，”斯蒂文森说，它逐渐成长，现在已不是一个单晶，而是众多单晶的组合体。

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The density of crystal defects in the region near the crystal surface is greater than that in the center.

晶体的靠近表面的区域缺陷较密集，中心部分较少。

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A new method of high density information storage with F_2 center in alkali halide crystal was discovered.

本文提供了一种利用碱卤晶体的f_2心实现高密度、可擦除光存储的新方法。

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This Windows Media Center 2005-powered machine delivers that crystal clear HD video via the ATI X1600 graphics card, and AMEX even throws in a "multi-function" remote to control the action from your oh-so-comfy loveseat.

ENGADGET: AMEX Digital launches M505-BDR Blu-ray recording HTPC

Young performing artists who were finalists at the Spotlight Awards, which is sponsored by the Music Center Performing Arts Center of Los Angeles County, are entertaining guests on Crystal Cruises this summer for special themed Emerging Artists voyages.

FORBES: Young Artists Entertain on Crystal Cruises this Summer.

"I don't actually pay attention to any of the elections, " says Crystal Slater, 23, who works at the Rent-a-Center in Nashua.

CNN: NHPrimary.com: Non-voters will stay in the shadows