But the CeO2-TiO2 mixed oxides prepared by conventional drying method show lower pore volume and surface area with serious aggregation, and amorphous phase compared to the corresponding aerogels.
采用普通干燥法制备得到的复合氧化物具有较低的孔体积和比表面积，颗粒间团聚较严重，但无“孤岛”状大颗粒，晶相为无定型结构。
Polyurethane organic precursors with different pore siize were dipped in slip, then super posited them together and the gradient porous ceramics were made by drying and firing.
将不同孔径的聚氨酯泡沫前驱体分别浸渍泥浆，再以一定的方法将其叠放在一起经过干燥、烧成等工艺可以制得具有一定强度的孔梯度多孔陶瓷。
Polyurethane organic precursors with different pore siize were dipped in slip, then super posited them together and the gradient porous ceramics were made by drying and firing.
将不同孔径的聚氨酯泡沫前驱体分别浸渍泥浆，再以一定的方法将其叠放在一起经过干燥、烧成等工艺可以制得具有一定强度的孔梯度多孔陶瓷。
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