介绍了分形几何在确定土壤大孔隙分布中的应用。
The application of fractal geometry to characterize the distribution of soil macropores is introduced.
不同土壤剖面大孔隙的数量和孔隙体积相差很大。
There was much difference in quantity and volume of macropore in the profiles of the three soils.
大孔隙中运动的水流称为管流，管流是优先流的一种形式。
Water flowing in macropores is called pipe flow, and it is one kind of preferential flow.
土壤大孔隙结构对土壤中水流及溶质运移以及地下水环境有着深刻影响。
The structure of macropore plays an important role in water flow and solutes transport in soil, and influences the environment of underground water.
结果表明CT扫描是一种有发展前景的、非破坏性的确定土壤大孔隙的方法。
Results indicate that ct scanning is a promising, non-destructive method for characterizing macropores in soil.
土壤大孔隙和土壤饱和导水率深度增加呈减小的趋势，并且变异性和复杂性很大。
The macropore and saturated hydraulic conductivity have increase with the increase of altitude and have great variability and complexity.
由于土壤大孔隙的分布呈现分形规律，因此可以采用分形理论研究土壤大孔隙结构。
Because of the distribution of macropore exhibit fractal rule, fractal theory can be used to study the structure of macropore.
通过这种方法，不仅可以填充纤维束之间的大孔隙，而且可以填充纤维之间的小孔隙。
By this method, not only the large pores between bundles but also the small pores between fibers in a bundle can be filled.
土壤大孔隙是普遍存在的现象，并非例外，它对水及溶质在土壤中的运移有着深刻影响。
Macropores in soil are general phenomena rather than the exception, they have greatly influence on the movement of water and solutes within soil.
图像定量分析结果表明随着免耕时间的推移，小团聚体和小孔隙减少而大团聚体和大孔隙增加。
The analytical results of aggregate and pore size distributions clearly showed that smaller aggregates and pores decreased while larger aggregates...
强化森林土壤大孔隙的研究，可深化森林涵养水源机理的研究，加深对森林调节水文过程的认识。
To further research the mechanism of water source conservation and adjust the process of forest hydrology, it is necessary to enhance the research of macropore.
确定土壤大孔隙结构，可以很好地理解和预测水及溶质在有大孔隙土壤中的运移，保护地下水环境。
Determining the structure of macropore can better understand and predict the behavior of water and solutes in macroporous soil, and help to protect the environment of underground water.
由试验可知，原状黄土在湿陷过程中发生了某些物理化学变化，大孔隙对黄土的湿陷没有必然的贡献。
It is found that some physical and chemical changes occur in the collapse process and the big pores in loess do not always contribute to collapsibility.
本文着重对节水灌溉稻田土壤大孔隙分布不确定性研究，为大孔隙流研究工作进一步开展奠定了基础。
This paper emphatically studied uncertainty distribution of macropore in paddy soil, laid the foundation of further research on macropore flow.
通过对大孔隙沥青混合料的孔隙率、配合比及力学指标的研究，为透水性沥青路面设计及应用提供指导。
Studying the porosity of asphalt mixture with large pores, proportioning and mechanics target offers an instructions for design of permeable asphalt pavement and its application.
半柔性路面是一种在大孔隙沥青混合料中填充水泥胶浆而形成的兼具沥青路面与水泥砼路面特点的复合路面。
Semi-flexibility composite pavements design principles and material ratio of cement slurry are analyzed, then the key problem of irrigation skills is put forward.
土壤中普遍存在的大孔隙使水及溶质快速穿过土壤，污染地下水，确定土壤大孔隙流性质需要大量的野外和室内实验。
Water and solutes go fast through the macropores in soil and pollute groundwater. Field and laboratory tests are needed to determine the macropore flow properties.
高分子絮凝剂对煤泥滤饼最终水分的影响具有双重作用，一方面可以改善滤饼结构，有利于自由水和大孔隙间水分的脱除；
The polymers have two different effects in the filtering progress: Firstly, the polymers can improve the structure of coal cake, and this effect is helpful to remove the water between wadding groups.
所述陶瓷包含氧化铝并通过喷涂 含有不超过35重量％可分散氧化铝的氧化铝溶胶和氧化铝颗粒的混合 物使之具有大孔隙。
The ceramiccomprises alumina, and is made macroporous by spraying a mixture of alumina sol and alumina particles with no more than 35 % by weight of dispersible alumina.
假设为大孔隙多孔介质，模拟钠在蒸汽发生器内的流动，引入体积孔隙率，面渗透率和分布阻力来模拟管束、支撑板对钠流动的扰动。
The model simulates sodium flow in the steam generator as quasi-continuum. The model USES volume porosity, area permeability and distributed resistance to model the tubes and support plates.
研究土壤大孔隙经常采用的方法有染色法、CT扫描技术和入渗方法；由于土壤大孔隙的高度不规则性，常采用分形理论研究大孔隙的特征。
The methodologies of macropore research had dye tracer, ct scanning and infiltration, and the fractal theory was also used to researched macropore characters.
低孔低渗、微孔喉为主、大孔隙表面积和亲油性决定其主要成为储气层，并控制着凝析气藏的聚集、油气分布、开采中产能及油气性质的变化。
The tiny diagenesis cracks are mainly the reservoir space of condensate gas. The reservoir rock is characterized by low permeability and porosity, tiny throat, larger surface and affinity for oil.
土壤特性的空间尺度问题是当今土壤科学研究的前沿，在进行土壤空间变异研究中，大孔隙的合理取样尺度分析对大孔隙流研究具有十分重要意义。
Spatial scale is forefront in soil-scientific research, so the analysis of macropore reasonable sampling size becomes significant which is in case of taking account of spatial variability.
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。
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.
同一传质体系，在相同流动条件下孔隙率大的膜的传质系数大于孔隙率小的膜的传质系数。
The mass transfer coefficient was higher for the big porosity membrane than for the small porosity one at same experiment condition.
试验表明突出危险煤较非危险煤孔隙率大，强度小，且具有更大的瓦斯解吸速度。
Tests show that coal with larger porosity, lower strength and higher velocity of gas desorption is more dangerous in hazard of outburst.
试验发现，短纤维束滤料滤层的孔隙率沿过滤方向由大到小，为变孔隙滤层。
Experiments showed decreased porosity of the filter bed along the filtering direction.
利用冷冻塑形法制备了具有定向孔隙结构的大孔磷酸钙骨水泥支架。
A macroporous calcium phosphate cement scaffold with oriented pore structure is prepared by freeze casting.
利用冷冻塑形法制备了具有定向孔隙结构的大孔磷酸钙骨水泥支架。
A macroporous calcium phosphate cement scaffold with oriented pore structure is prepared by freeze casting.
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