例句與造句

1. in this paper, studying on the polymerization reaction in silicic acid solution is determined and the gel time of polysilicic acid is obtained when acetic acid compound exist
   摘要在前人研究工作的基礎(chǔ)上，應(yīng)用乙酸進行硅酸聚合膠凝的實驗研究，實驗結(jié)果表明，當硅酸溶液中有乙酸化合物時，硅酸聚合膠凝的時間將延長。
2. It's difficult to find polysilicic in a sentence. 用polysilicic造句挺難的