The pixel density of an iPhone is much greater than a desktop monitor, allowing small text to be read somewhat more easily and somewhat changing the relative size of images.

iPhone 的像素密度比桌面电脑显示器要高得多，便于阅读小文本或更改图像的相对尺寸。

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When I unwrap a game character I usually give more pixel density to the upper part of the body.

当我分好一个游戏角色，我经常会给上半身更多的象素。

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Results Before using SonoVue, there was no difference in color pixel density between malignant group and benign group and no correlation between the color pixel density and MVD of malignant group.

结果增强前彩色像素密度恶性组与良性组间无显著性差异，且彩色像素密度与MVD无相关性。

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It's not quite Retina display quality, but with a pixel density of 216ppi, it's very close.

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The display is a 4.7 inch 720 pixel HD with a pixel density of 315 pixels per inch.

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The Lumia 810 also features a 4.3-inch OLED WVGA (800 x 480) ClearBlack display offering a pixel density of 217ppi.

ENGADGET: Nokia Lumia 810 for T-Mobile hands-on Mobile