摘要:
Pixel densityTime Limit: 1000MS Memory limit: 65536K题目描述Pixels per inch (PPI) or pixel density is a measurement of the resolution of devices in various contexts; typically computer displays, image scanners, and digital camera image sensors. Note, the unit is not square inches. Good quality photograp 阅读全文
posted @ 2013-04-12 20:32
iFinVer
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