更新1:
https://session.masteringphysics.com/problemAsset/1756450/2/giankoli_7_19_45.jpg
https://session.masteringphysics.com/problemAsset/1756450/2/giankoli_7_19_45.jpg
收錄日期: 2021-05-01 15:38:50
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20151213161202AAXo3pE