气凝胶

Preparation of aerogels and their application in catalysis are introduced in this paper.

本文综述了气凝胶的制备方法以及它在催化领域的应用。

The second option is to extract the track directly from the aerogel in a "keystone", using an extraction technique that we developed here at Berkeley specifically for Stardust and have been using successfully for several months on the cometary collector.

第二种方案是直接从气凝胶中提取出含有轨迹的楔形块，用的是我们在伯克利特别为 Stardust 开发并在数月前成功用在彗星收集器上的提取技术。

In January 2004, the Stardust spacecraft flew through the coma of comet Wild2 and captured thousands of cometary dust grains in special aerogel collectors.

在2004年1月，星尘号飞船从"怀尔特2"彗星的彗发中穿过并用专门的气凝胶收集器捕获了数千彗星尘埃颗粒。

The results show that the influence of pore size distribution on desalination varies in different solution concentrations.

结果表明，随着溶液浓度的变化，不同的孔径分布对碳气凝胶除盐效果影响不一样。

The thermal conductivity of the silica aerogels was determined using the transient hot-wire ...

结果表明：两种方法制备的气凝胶均是典型的纳米孔超级绝热材料，后者热导率略高但成本低许多，所以更具应用推广潜力。

It can be found that the practical packing tightness was different between adjacent layer and interdiffusion was exist in the interface.

重点研究了不同密度层间界面的情况，发现相邻两层SiO2气凝胶颗粒堆积的紧密程度不同，在界面处存在一定的互扩散。

The beam might be lighter," Madden says,"but it would have to be a lot bigger.

用气凝胶作的梁可能较轻，"马登说，"但它的尺寸及量必须是更大更多。

This series of products are made by special technics, in which nano- silica aerogels is adopted as leading material.

该系列产品以纳米二氧化硅气凝胶为主体材料，通过特殊制造工艺复合而成。

Carbon xerogels with high electrical conductivity were prepared with resorcin / formaldehyde via ambient drying technology and were characterized by XRD and four-probe electrical conductivity measurement.

以间苯二酚/甲醛为反应物，采用常压干燥工艺制备了高电导率的炭气凝胶，并用 XRD 和四探针电导率测试仪对其进行了表征。

The density, the specific surface area, porosity and particle diameter of hydrophobic SiO2 aerogels range from 77 to 200 kgm^(-3), 500 to 750 m^2g^(-1) and 88% to 93% and 50 to 200 nm, respectively.

结果表明，所制备的疏水SiO2气凝胶的密度、比表面积和孔隙率分别为77~200kgm^(-3)，500～750平方公尺g^(-1)和85%~95%，其颗粒尺寸为50~200nm。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。