Contact us
Choose a category below so we can get back to you as quickly as possible.
實際距離是: 20÷1/1000000 =20×1000000 =20000000釐米 在比例尺是1比5000000的地圖上這兩地間的距離是: 20000000×1/5000000 =20×1/5 =4釐米 有不明白的地方歡迎追問.
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.