更新1:
若a:b=2:3及b:c=2:5,求a:b:c ?求解答
若a:b=2:3及b:c=2:5,求a:b:c ?求解答
收錄日期: 2021-04-18 15:18:09
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20160720053853AAqDp7x