The research progress and the use of photochromic liquid crystal single molecule were summarized.

综述了光致变色液晶小分子化合物研究进展及其应用前景。

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"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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Under very high pressure, the samples switched from their amorphous, glassy state to form a single crystal -- the first time this behavior has been seen in a glass. The discovery.

在非常高的压力下，样品从无定形的、玻璃态转化成为单晶——这是第一次在玻璃中发现这种行为。

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There is no way that you could irradiate a crystal of nickel with a single beam of x-rays and get that circular ring pattern if the electron beam were behaving as a particle beam only.

没有什么其他的途径,可以让镍晶体发射,单束X光来,继而得到环状图案,如果电子束,是以粒子束形式出现的。

麻省理工公开课 - 固态化学导论课程节选

They took a crystal, this is a single crystal of nickel that has regular planes of atoms, and those planes are spaced on the order of an angstrom or less apart, and they irradiated this with x-rays.

他们取了个晶体,一个具有规则原子平面的，镍晶体,这些面间距差不多也是一埃或者更少，它们放射出X射线。

麻省理工公开课 - 固态化学导论课程节选

And "power" is a relative term, since technically there's no electricity coursing through the single-crystal panels.

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But crystal fibres push the range of single-mode wavelengths right into the visible part of the spectrum, opening up huge new tracts of wavelength for telecommunications.

ECONOMIST: A new approach to making optical fibres

This device patented by a German scientist, Ferdinand Braun, in 1899 was made of a single metal wire, fondly called a cat's whisker, touching against a semiconductor crystal.

ECONOMIST: The middle age of the transistor