r(longitude1-180) y = r*log[tan(pi/4 latitude/2)] longitude1
wikimedia.org/wiki/file:latitude_and_longitude_of_the_earth.svg
日期变更线为东的经线都称为西经纬度,纬线(latitude)我们通常说的纬
高档世界地图模板psd分层素材
latitude and longitude
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