海量資源,盡在掌握
 原有的單位要換算成的單位應乘以square inches平方英寸square centimetres平方厘米6.451 6square feet平方英尺square metres平方米0.092 903square yards平方碼square metres平方米0.836 13square miles平方英里square kilometres平方公里2.589 99square miles平方英里acre......(本文共 502 字) [閱讀本文] >>