查询词典 perviousness

Considering the difference of runoff characteristics on different underlying surface in the area of plain tidal river network, four kinds of surface is divided,namely, waters paddy field-, dry land and central urbanized area,and suitable method is adopted separately in each surface to simulate runoff process. Xinanjiang Model usually applicable for mountain areas is introduced to river network area, furthermore, the paper researches runoff calculation of central urbanized area, the underlying surface is divided into pervious and imperviousness areas.In perviousness areas, Hoton Infiltration formula and corresponding spatial infiltration rate curve are used to establish the relationship between infiltration rate and soil moisture in order to decide the infiltration. According to practical situation.

根据平原河网区城市下垫面产汇流方式的不同，分成水面、水田、旱地、城镇四类，分别采用相对应的产流汇流计算方法，将适用于山丘区的新安江模型引入到平原河网区城市，同时对于城镇这类下垫面，从下渗角度考虑，划分成透水和不透水两种类型，根据霍顿下渗公式和下渗率空间分布曲线，建立下渗率和土壤含水量的关系，进而研制出城镇透水面的产流计算方法，城镇汇流根据实际情况可结合城市管道排水计算。

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。

Based on topography and geological condition,this paper ulity field test and laboratory test to study the gradation, compaction, density, perviousness ,it can help the project cosnstrct and provide an reference for the other high embankment dam'construction.

为此，本论文结合该工程的地形、地质条件，采用现场试验和室内试验，对坝体各种材料的级配、击实、密度、碾压渗透及现场碾压特性进行试验研究，为工程的顺利建设和今后高土石坝建设提供参考意见。

The main research approach is to compare several kinds of existing drainage pitch mixture gradation, through adjusting fine aggregate and coarse aggregate proportion, especially 2.36mm and 1.18mm, from the results of tests, point out optimum gradation of good water stability, and find the interrelation of bituminous mixture perviousness and void ratio.

主要研究方法是比较几种现有的排水沥青混合料的级配，通过调整级配的粗料和细料，特别是4.75mm和1.18mm的集料比例，从所确定级配的试验中，发现具有良好水稳性的最佳级配，并发现沥青混合料的透水性和空隙率的相互关系。

In sugar plant, using ZSF68 can obtain more sugar owning to the enhancement of water perviousness; it can be used as emulsifier when vinyl acetate latex polymerizes. If ZSF68 is used as paper making adjuvant, it can effectively improve the quality of chrome paper.

在糖厂使用ZSF68，由于水的渗透性增加，可获得更多的糖分；在醋酸乙烯乳液聚合时作乳化剂；还可用作造纸助剂，ZSF68能有效地提高铜版纸的质量。

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。

It will become loose when this rock is disturbed. The test result shows that, by compaction, fine sands and mid-fine sands of the rock possess the characteristics of non-expansion, weak freezeexpansion, exceedingly light perviousness and high shearing strength.

通过试验证实：细沙、中细砂经压实后，均有较好的压实性，不产生膨胀，属弱冻胀，极微透水，低压缩性，较高的抗剪强度，这些特性指标均能满足工程要求。

The first is improving intestinal physical defensive barrier: restoring intestinal perviousness and altering intestinal micro-circumstance and activating generation of benefical bacteria; The second is improving intestinal immunity defensive barrier and eliminating inflammatory reaction.

益生菌治疗UC的机理，主要表现在两个方面：一方面是提高肠道非免疫防御屏障功能，包括恢复肠道黏膜通透性和改变肠道微生态环境，并激活内源性细菌的代谢；另一方面是提高肠道免疫防御屏障，通过改善肠道免疫防御屏障而消除肠道炎症反应。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。