尽管这些图像没有彻底展示显示器的高分辨率，但是您可以从许多屏幕单元中的文本密度看到高分辨率。
Although these images don't quite demonstrate the high resolution of the display, you can see it in the density of text in many of the screen cells.
Amazon SimpleDB存储较小型的数据单元，使用比较低密度的磁盘，为数据访问速度而优化。
Amazon SimpleDB stores smaller bits of data and USES less dense drives that are optimized for data access speed.
信息密度在一个线性维度内有用的信息单元的个数。
The number of units of useful information contained within a linear dimension.
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