The funnel and panel after separating can be respectively used to re-manufacture new cathode ray tubes, to produce glasses, or to recover lead through smelting.Several physical and c...

 
  • 低熔點(diǎn)玻璃中存在的金屬離子與硝酸反應后生成的物質(zhì);如硝酸鉛、硝酸鋇、硝酸鋅及硼酸等的存在會(huì )使低熔點(diǎn)玻璃的溶解速率降低.
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan