1. Lower limit
2. Upper limit
3. Lower limit of the length
4. Upper limit of the length
5. Lower limit of the perimeter
6. Upper limit of the perimeter
收錄日期: 2021-04-27 16:36:49
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080731000051KK03448