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更新日期：2015-06-06
檔案大小：20M
目前版本：1.3
版本需求：Android 4.0 以上版本
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A compass is a navigational instrument that shows directions in a frame of reference that is stationary relative to the surface of the Earth.
The frame of reference defines the four cardinal directions - north, south, east, and west.
The compass calibration is necessary for several seconds spins the device from side to side, up and down. Just make sure your device supports compass.
