The grain size differs obviously with the time of ball milling and it reaches the smallest value when been ball milled for 15~20 hours. The grain size also grows when annealed at certain temperature.

结果表明在行星球磨方法下，球磨15到20小时材料晶粒达到最小，在一定温度下退火之后材料晶粒长大。

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Often, the relative performance of XML frameworks differs greatly depending on the size of documents being used, so I included both large and small documents in these performance tests.

通常，根据所用文档的大小不同，xml框架的相对性能会有巨大差异，因此在这些性能测试中，我同时包含了大文档和小文档。

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Although very similar in size and general appearance to R. blasii, the horseshoe (nasal) structure differs and it calls at a completely different echolocation frequency.

尽管在个头和外观上都与布氏菊头蝠十分相似，但是它们的鼻子构造不同，因而其回声定位频率截然不同。

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The relative size of these components differs greatly between countries and over time, and can be particularly important in the level and growth of real living standards in the poorest countries.

ECONOMIST: Rich man, poor man

The vaccine differs from birth control pills not only in the size of its benefit to recipients, but also because the vaccine benefits more than simply the person who receives it.

FORBES: The Pill, the Pox and the Limits of Religious Freedom