It adopts a plan, in which cement is made through refining and mixing flyash with dinker brought from other factory.

 
  • 介紹了粉煤灰與外購熟料磨細、混合制水泥的工藝流程。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan