Electronic

GUIDE:
1. To move the map: Put the mouse on the map then press the left button,and drag it;or click the direction icon on the top left corner.
2.Zoom: you can adjustment the zoom by click the "and","minus" button or the slide bar,the higher degree of the zoom,the clearer of the building.
3.The latitude and longitude shown is the center point of the map,the longitude positive means east longitude,the longitude minus means west longitude,the latitude positive means north latitude,the latitude minus means south latitude.