http://i303.photobucket.com/albums/nn156/syliva_meteor/001.jpg
19(a)我計到,但係b)唔識,我唔明佢話每秒2弧度即係點
可否詳細解釋,最好附圖,唔該,請幫下我
收錄日期: 2021-04-23 20:38:25
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20090523000051KK00116