透水性

In this paper, permeable concrete pavement research background and significance, in view of the definition of permeable concrete pavement, characteristics and a brief overview of classification, and water permeability of concrete and its surface structure analysis, and then proceed with the design, the final list were permeable concrete pavement of a number of advantages, and applications are discussed and research, thereby found that there are problems and give solutions, and ultimately come to the conclusion and outlook.

本文阐述了透水性混凝土路面的研究背景和意义，针对透水性混凝土路面的定义、特点以及分类进行了简要概述，并对透水性混凝土及其路面构造进行了分析，然后进行配合比设计，最后分别列举了透水性混凝土路面的多项优点，并对其应用前景进行了探讨和研究，从而发现存在问题并给出解决方法，最终得出结论并进行展望。

A lab test apparatus was developed into evaluating the noise reduction of the porous cement concrete. A constant head permeameter was developed to ascertain the water permeability of porous cement concrete, the influence of the porosity and pore size on the water permeability was studied.

另外，对多孔水泥混凝土的透水性能进行了研究，通过建立有效孔隙率、孔径大小与渗透系数的关系，结合其实际透水性能，得出了满足一般排水性路面排水要求的有效孔隙率范围和级配。

Pervious concrete is of good perviousness,it can release the problems of highway seeper and urban environment,so it is a sort of environmental protection concrete. Through comparison test of performance of mixtures with different single particle size,the result indicates that mixing single particle size mixtures is of a good many advantages.

透水混凝土具有良好的透水性，能够缓解公路积水和城市环境问题，是一种环保型的混凝土，通过对不同单粒径混合料的性能进行比较试验，结果表明，将单粒径混合料进行混合具有很多优点。

The velcanized of hydroscopicity or perviousness is good or bad: velcanized of materlal, firmness and sizing, determines its hydroscopicity or perviousness.

原纸的吸水性或透水性的好坏：原纸的材质、紧度和施胶度，决定了其吸水性或透水性。

On the basis of laboratory and in situ tests,we analyse the depth and perviousness of vadose zone as well as aquifer and aquifuge and, furthermore,point out Penglaizhen formation with poor permeability can effectively prevent pollution of ground water from the leachate of refuse.

结合室内和野外现场试验，详细分析填埋场区的包气带、含水层、相对隔水层的厚度、透水性等水文地质条件，指出被透水性差的蓬莱镇组中段地层所围限的三面环山、中间沟谷的地质环境，能够有效地阻滞垃圾渗滤液对地下水的污染。

Hydroscopicity or perviousness macherent was so bad, suppresses the infiltration of adhesive bonding; hydroscopicity or perviousness is too strong a macherent, will lead to gum the phenomenon is not gelatilization, instilla with laurocapram rubber.

吸水性或透水性太差的原纸，会抑制黏合剂的渗透粘合；吸水性或透水性太强的原纸，一会造成胶未糊化现象，二会产生透胶现象。

Studies on the dormancy characteristics of Pinus bungeana seeds from 7 representative seed sources show that the difference of water permeability of seed capsule was very significant among seed sources.The seeds from northern part of distribution area had a much higher water permeability than from the south.

对7个具有代表性种源的白皮松种子的休眠特性研究表明，白皮松种子种皮的透水性在种源间差异明显，表现出随地理纬度的增高而逐渐增大的趋势，分布越是偏北的种源透水性趋于加强。

This paper discussed the influences of different cement, Inorganic Filler and the defoaming agent on the tensile strength and elongation at break of coating film;The influence of various of polymer-cement ratio (mass ratio of pure polymer to cement) and coating times on the tensile strength and elongation at break of coating film were researched;This paper also discussed the water Resistant Performance, watertightnessand the adhesion strength of wet subbase of coating film.

本文研究了不同种类的水泥、无机填料及消泡剂对涂膜拉伸强度和断裂伸长率的影响；研究了不同聚灰比(聚合物干量和水泥的质量之比)、不同的涂覆层数对涂膜拉伸强度和断裂伸长率的影响；讨论了涂膜的耐水性、不透水性、潮湿基面的粘接强度等防水性能。

Four embankment types made of eco-concrete including prefab spheriform brickwork,brickwork of 16-sphere combos,rectangular brickwork with three holes and rectangular brickwork were used in ecological slope protection of Huangpujiang River.The ecological properties of different embankment types were evaluated by the capacity of water and soil conservation,growth of plant and stability of embankment.

生态混凝土是采用特殊级配的集料和胶凝材料，在力学性能满足工程使用要求的同时，形成蜂窝状的结构，实现其多孔连续的特征，具有良好的透水性和透气性，植物能在其中生长，应用于河湖生态护坡，营造生物多样性的生境。

The squamaceous ferric oxide has been homo-dispersed in the film, to form the good shielding interface, and reducing permeability of water and the breathing property of the film.

鳞片状的云母氧化铁均匀分散在涂层中，形成良好的屏蔽介面，降低了涂层的透水性、透气性，具有优异的防腐蚀能力。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。