With acid activation treatment, active white clay was produced from a bentonite ore in Shandong Province.

 
  • 以山東膨潤土為原料用酸活化法生產(chǎn)出了活性白土。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan