Contact us
Choose a category below so we can get back to you as quickly as possible.
在一幅比例尺是1:20000的地圖上,量得AB兩地長8釐米.如果在比例尺是1:40000的地圖上,這兩地的距離是40000:20000=4cm
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.