The solvent was evaporated under reduced pressure and water (100 ml. and acetic acid (12 ml. were added to the residue.

 
  • 溶液減壓蒸餾,在殘留物中加入100毫升水和12毫升醋酸。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan