Sodium montmorillonite can be freeze-dried into a spongelike material known as an aerogel.

By testing and Analyzing the perviousness of two kinds of flexible compound material, the application of it to military packaging is researched.

通过试验，对两种软质复合材料的透湿性进行对比分析，并就其在军品包装方面的应用进行研究。

Light; Study on perviousness of plant-growing concrete

植生混凝土的透水性能研究

A study on dynamic characteristics of storm water perviousness on low slope roofs with corrugated sheet steel tiles

小坡度压型钢板瓦屋面雨水渗透动力特性研究

A Probe into Perviousness Test Method and Its Criterion in Bituminous Pavement

沥青路面渗水测定方法及其指标的探讨

A Study of the Second Addition to Raising Perviousness of Membrane

第二添加剂对提高膜透水性能影响的研究

In the end, this paper suggests that, the anti-inrushing stability of confined water foundation pit in soft soil area should be analyzed from perviousness and inrushing mechanism of soil at the bottom of the pit.

最后分析指出，软土地区承压水基坑抗突涌稳定分析，应从坑底土透水性和土体发生突涌破坏的机理着手。

An analysis is made of the characteristics of dike works, perviousness of dike foundation and seepage characteristics of different foundations. Therefore, the design principle of seepage control and its selection of measures are raised.

对堤防工程特点、地基渗透性、不同地基的渗流特点进行了分析，提出了渗流控制设计原则和措施选择。

Materials and Methods: We collected 26 patients with encephalic sponginess angioma approved by postoperative pathology, all the patients were diagnosed by CT 、 MRI and DSA.

材料和方法：收集了经手术病理证实的26例颅内海绵状血管瘤的CT、MRI和DSA的影像特点。

It is a key point to the decision on how to solve the problems to make a correct estimate on the sponginess of the present real estate market and its trend for development.

正确估计当前我国房地产市场泡沫程度及其发展趋势，是决定采取何种办法解决问题的关键。

Objective: To probe into diagnostic value to nature and loality of encephalic sponginess angioma in CT, MRI and DSA.

目的：探讨CT、MRI与DSA对颅内海绵状血管瘤的定性、定位的诊断价值。

With short time pre-evaporation and low temperature coagulation bath, membrane's supporting layer is small and uniformity sponginess network-structure.

当预蒸发时间较短和凝固浴温度较高时，膜的支撑层为典型的小而均匀的海绵状网络孔结构，基本看不出过渡层；

Methods The artifical sponginess skin can be obtained from the effervesced chitin.

方法市售甲壳素经发泡技术制成海绵状人工皮。

Conclusion: MRI diagnosis to encephalic sponginess angioma is superior to CT and DSA.

结论：MRI对颅内海绵状血管瘤诊断价值优于CT和DSA。

Image contrast among CT 、 MRI and DSA to encephalic sponginess angioma

颅内海绵状血管瘤的CT、MRI与DSA对比研究

The mill cannot grind with the water that is past.

时不待我.

Why don't you stay in the bar that night I got your numbers?

我让你写号码那天你为什么不待在酒吧?

He regards the whole thing as very important , and treats it with the utmost attention.

他很看重这件事情, 认真程度就不待说了.

This applies with still greater force to other regional power groups.

其他各地方实力派更不待论.

However, we have to take actions right here and right now.

但时不待我, 此时此刻,需要立即采取切实的行动.

On the Unlimitedness of Literary History

文学史无限论