像素操作（pixel transfer operation） 像素从客户内存中解包出来之后，解出来的数据要经过缩放、偏移、映射、箝拉（clamping）。这些处理即为像素转换操作。
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当你的确可以将Windows GDI用作高层次的矢量绘图系统时，你也可以将它用于相关的低层次的像素操作。
While you can certainly use the Windows GDI as a high-level vector drawing system, you can also use it for relatively low-level pixel manipulation.
这个新的操作系统可容纳320x320像素的高清晰滤色屏。
The new OS can accommodate high-resolution colour screens of 320 by 320 pixels.
在不同操作系统和语言中，字体像素大小的高度和宽度都会发生变化。
Font pixel size for different operating systems and languages can change in height and width.
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