By using particle dense packing theory, the influence of particle size distribution of cementitious material on microstructure and strength of cementgel were discussed in this paper.
根据颗粒紧密堆积理论，探讨胶凝材料的颗粒级配对水泥凝胶体微观结构及强度的影响。
2
One company selling hydrochloric acid for etching cement floors reckoned that, because it was in gel form and could legally be washed down the drain, the product was environmentally friendly.
一家销售蚀刻水泥地盐酸的公司以为盐酸为胶液产品，可以被合法地冲进下水道，因此是环保产品。
3
Trials of the clear, toothpaste-like gel have helped treat those with ulcers and also a 25-year-old workman in New Zealand who got cement in his eye.