Lumia 1520 IE mobile window.devicePixelRatio
Lumia 1520 IE11 mobile -> window.devicePixelRatio = 2.217964285714286
Lumia 1520 UAP 环境 -> window.devicePixelRatio = 2.200000047683716
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Lumia 1520 IE11 mobile -> window.devicePixelRatio = 2.217964285714286
Lumia 1520 UAP 环境 -> window.devicePixelRatio = 2.200000047683716