Contact us
Choose a category below so we can get back to you as quickly as possible.
角速度除南北幾點外任何地方都15度/小時;線速度從赤道向兩極遞減,到兩極為0,赤道為1670Km/小時,到南北緯60度為835km/小時.剛好一半.
We and our partners use cookies and other technologies to analyze traffic and optimize your experience. View more info and control your cookies settings at any time in our Cookies Policy.