The technological process for preparing phosphorous acid from the production waste of sodium hypophosphite was described.

 
  • 介紹了從次磷酸鈉生產(chǎn)廢渣中回收提取亞磷酸的工藝。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan