The exact physical pixels per inch of the screen in the X dimension.
译：在屏幕的X方向，每英寸有多少个物理像素。
By comparison, my N900 is 267 pixels per inch -- granted with only 800 x 400 display.
iPad是每英寸132个像素，对比之下，我的N900是每英寸267个像素，在一个800x400的屏幕之下。
Being relatively small, the screen had a resolution of a then-unheard-of 200 pixels per inch (ppi).
一款相对较小的显示器，它拥有一个前所未闻的每英寸200像素的显示屏。
RESOLUTION - Printed photographs should be scanned at a sampling frequency of at least 300 pixels per inch.
分辨率-打印出的照片应按高于每英寸300像素的抽样率进行扫描。
Overhead, Christie projectors produce a blended 3568 x 2000 pixel image yielding 15 pixels per inch of high definition.
在头上，Christie的放映机显示一个混合的3568x 2000像素图像，产生高清晰的每英寸15个像素。
Maintaining a density of 80 pixels per inch over an area several feet on a side implies displaying tens of millions of pixels.
一方面在几英尺的区域内保持每英寸80个像素密度意味着显示上千万个像素。
Most people couldn't tell you the total number of pixels their printers display horizontally and vertically on a sheet of paper or the number of pixels per inch on their video displays.
大多数人不会告诉你他们的打印机在一张纸上水平地和垂直地显示的像素总量和他们的视频显示器上每英寸像素的量。
SAMPLING FREQUENCY - the number of samples (e. g., pixels) per unit (e. g., inch).
采样频率—每单位(如英寸)的采样数(如像素)。
Every screen has pixels-per-inch (PPI) characteristic. This number tells you how many pixels fit into one inch and thus how large the pixels appear in the real world.
每一个屏幕都有一个每英寸像素(PPI)的特性。这个数字告诉你一英寸显示多少像素，也就是一像素在真实世界里显示的大小。
Every screen has pixels-per-inch (PPI) characteristic. This number tells you how many pixels fit into one inch and thus how large the pixels appear in the real world.
每一个屏幕都有一个每英寸像素(PPI)的特性。这个数字告诉你一英寸显示多少像素，也就是一像素在真实世界里显示的大小。
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