透水的

In this paper, a quaternary ammonium salt of chitosan was synthesized and the factors affect on the solubility or degree of substitution of product, such as the concentration of alkali, the time of basification, the content of water in system, the time of dispersing and the method of adding epoxyproryltrimethylammonium chloride, were discussed in detail. The product was characterized by IR, DSC, TG and X-RAY diffraction. The effects of time, humidity and temperature on the gases permeability of the quaternary ammonium salt of chitosan film were researched.

本论文研究了壳聚糖季铵盐的合成反应，对碱化浓度、碱化时间、水的含量、分散时间和醚化剂的加入方式等因素对制备反应的影响进行了考察；应用红外光谱、DSC、TG以及X-射线衍射对产物进行了表征；探讨了时间、湿度和温度对壳聚糖季铵盐膜透气性的影响。

The characteristic, present state, existing main problems of brine pan slope protection are introduced.

盐田护坡是盐田建设的重要部分，分析并简要介绍了盐田护坡的特点、现状，指出了目前盐田护坡存在的主要问题，提出采用透水软排体护坡是盐田护坡的有效方法并阐述其应注意事项。

The measurement results show that the minor principal stress in the rock mass around the high-pressure cavern is 5.6–7.9 MPa and nearly horizontal,the jacking strength is about 6.0–8.0 MPa,and the permeability under pressure of 7.0 MPa is less less than 1.0 Lu.

测量结果表明，测点洞段围岩的最小主应力值为5.6～7.9 MPa，最小主应力状态为近水平；测点洞段围岩的抗劈裂强度一般为6.0～8.0 MPa，围岩自身具有较强的承载能力；在7.0 MPa高压下洞壁围岩的透水率大多小于1.0 Lu。

The content of NaCl soluble calcium was highest in treated fruits, followed by water-soluble calcium, calcium acerate and HCl-soluble calcium.

结果表明：浸钙处理的果实总钙含量显著提高，其硬度明显高于对照，且有利于细胞膜透性的保持；梨果实中的NaCl溶性钙最多，其次是水溶性钙，醋酸溶性钙和HCl溶性钙含量较少。

The network seepage flow analysis method of rock masses is a numerical method compatible with Block Element Method on the basis of the assumption that the rock blocks are unpermeable while the discontinuities are permeable.

岩体网络渗流分析方法是在假定岩石块体不透水、岩体中渗流仅通过结构面进行的基础上建立起来的一种与块体单元法配套的岩体渗流数值模拟方法。

By assuming the grouting curtains to be block elements cut by relatively unpermeable discontinuities, and the drainage curtains to be plane discontinuities according to their main strike and dip angles on the basis of equivalent flow, they can be brought into the blocks and discontinuities system and be modeled conveniently.

本文假定防渗帷幕是由相对不透水结构面切割而成的块体单元，并根据流量等效的原则将岩体中的排水孔幕按其主倾向和主倾角等效成为平面结构面，从而将防渗帷幕和排水孔幕都纳入到块体和结构面系统中，统一进行数值模拟。

The revetment is made up of many single permeable tetrahedrons,and has much gap,so the group of permeable tetrahedrons can be treat as the porous media with large porosity.

四面体透水框架群是由很多单个四面体框架抛投而成，具有很大的空隙，因而，可以将框架群看成由很多框架杆件和大的孔隙组成的大孔隙率多孔介质。

Applying the technique, some products can be obtained, which reached the standards of Heavy Traffic Modified Asphalt and High Viscosity Asphalt for Drainage Pavement. The effect of technique conditions, including temperature and time, on the mechanical properties of SBS/kaoline compounds and the molecular distribution of SBS were studied.

研究了以高岭土和硅藻土为填料与SBS预先共混，获得了高性能、高温贮存稳定的不饱和聚合物SBS改性沥青，应用此技术获得的产品可以满足重交通改性沥青及透水路面用高粘度沥青的指标。

The flooding of a mineshaft in central China's Henan province Friday was the latest in a string of environmental and industrial disasters that have highlighted the country's infrastructure problems.

中国的环保及工业灾难频传，中部河南省星期五的矿井透水事件只是再添一例而已，这突显中国基础建设出现重大的问题。

However, the scaled exploration and usage of coal come with the mine gas blast, roof fall, water permeating, the death of mine workers and the smog hanging over London and Maas Valley.

然而与煤炭的大规模开采和应用相伴的是煤矿瓦斯爆炸、冒顶、透水和矿工死亡，是笼罩在伦敦和马斯河谷上空不散的烟雾。

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。