{-O-H}是`羥基`定係`氫氧基`
and `羥基`同氫氧基`有o羊分別
only chinese answer
收錄日期: 2021-04-12 19:13:27
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20061222000051KK02069