The corrosion of intermedium on fluid patrs of adjusting valve during the prodution of phenol is described briefly.

 
  • 簡(jiǎn)要敘述了苯酚生產(chǎn)過(guò)程中介質(zhì)對調節閥節流件的腐蝕,分析了介質(zhì)濃度、溫度對材料耐腐蝕性能的影響。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan