aerogel

1.Aerogel is a kind of low density porotic material which has many special physical and chemical properties.

气是一类具有许多独特物理、化学性质轻质多孔材料，众多领域中具有应用或应用价值。

2.The IR spectra of hydrogel, alcogel and aerogel of BaFe12O19 were studied, and the ones of the powders calcined at different temperatures for different time were also studied.

对钡铁氧体水、醇以及气红外光谱进行了初步观察，同时对不同焙烧温度及时间所得粉末红外吸收光谱进行了考察。