the bulb of the thermometer is placed near to the side-arm near to the
condenser. this is to record the temperature of the vapour which is distilled
over and collected. it gives the boiling point of water in this case.
我唔明段文講乜呀!可否詳細解釋..
收錄日期: 2021-04-13 16:06:32
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080927000051KK00957