點解test oxygen 時唔會用burning splint?
why test hydron 時又唔用glowing splnt?
唔該解釋下 thx
收錄日期: 2021-04-23 17:17:46
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070928000051KK03720