The result indicated that the sample prepared by Glauber s salt waste slag and meta-kaolin as raw materials could not harden.

 
  • 尝试利用榆林地区煤系高龄岩和内蒙地区一种价格低廉的芒硝工业尾矿来制备偏高岭土基胶凝材料的可行性。
今日热词
目录 附录 查词历史