建立了一维非饱和土壤中溶质运移的特征有限元数值模型。
The numerical model of one-dimensional solute transport through unsaturated soils is formulated by characteristic finite element method.
建立了一维非饱和土壤水分垂向入渗的特征有限元数值模型。
The numerical model of one-dimensional vertical water infiltration through unsaturated soils is constructed by characteristic finite element method.
本文的工作为对二相饱和土壤介质更深入的研究打下了基础。
The work of this paper lays a foundation for deeper research on nonlinear analysis.
数值例题表明了结构变形和饱和土壤固结过程之间的藕合效应。
Numerical results show the coupling effects between structure deformation and consolidation process of saturated soil.
对北京市污灌区非饱和土壤水扩散率及其影响因素进行了研究。
This paper discussed the unsaturated soil water diffusivity and its effect factors in waste water irrigation district in Beijing.
本文讨论了考虑饱和土壤固结效应的结构-土壤相互作用问题。
The soil-structure interactive analysis with the consideration of consolidation effects of the saturated soil is discussed in this paper.
当过量的水从饱和土壤中排出后，余下的水量被称为田间持水量。
The amount of water that remains after the excess has drained away from the saturated soil is known as the field capacity.
采用实验室土柱法研究了重金属镉离子在非饱和土壤中的迁移规律。
The procedure of heavy metal cadmium ion transport through unsaturated soils was simulated by virtue of laboratory soil column tests.
非饱和土壤水分运动参数的空间变异规律是大区域参数估计的基础。
Spatial variation pattern of water movement parameters in unsaturated soil is the base of parameter estimation in a large area.
建立了一维非饱和土壤中水平和垂向溶质运移的有限体积法数值模型。
The numerical model of one-dimensional horizontal solute transport and vertical solute transport through unsaturated soils is formulated by FVM.
土壤水分特征曲线是模拟水分和化学物质在非饱和土壤中运移的关键参数。
Soil water retention characteristics served as a vital parameter in modeling water movement and chemical transport in unsaturated soil.
非饱和土壤水分扩散率是研究土壤水分运动规律必不可少的基本参数之一。
Unsaturated soil water diffusivity is a necessarily basal parameter to study soil water movement laws and quantificationally analyze soil water movement with method of mathematical simulation.
5干热河谷典型的干热气候致使自由水面蒸发量是饱和土壤蒸发量3.35倍。
The amount of the water surface evaporation was approximately 3.35 times that of the saturated soil evaporation.
非饱和土壤中的水分是联系地表水与地下水的纽带，是田间作物赖以生存的源泉。
Unsaturated soils water is the connection of surface water and ground water, it is the source that the field crop living depends on.
土壤气相抽提(SVE)技术广泛应用于不饱和土壤中挥发性有机污染物的去除。
Soil vapor extraction (SVE) has been effectively used for the removal of volatile petrochemicals from unsaturated soil.
在给出饱和土壤介质固结有限元分析基本方程的基础上，讨论了饱和土壤固结分析问题。
Based on the foundational saturated soil consolidating finite element formulations, the problems in saturated soil consolidating analysis are discussed.
土壤水动力学是以土壤中水分的能态为基础研究非饱和土壤中水分、溶质和热量运移问题的学科。
Based on the energy state of soil moisture content, soil hydrodynamics studies water flow, solute and heat transport in unsaturation soil.
所得的非饱和土壤水运动方程对时间的差分方程，在空间上不仅可用有限元法而且可用有限差分法处理。
The time difference equation derived from unsaturated flow equation can be approximated by Galerkin finite element or finite difference method for space coordinate derivatives.
本文介绍了求解非饱和土壤中热量和水分耦合传输问题的一种数值方法——积分有限差分方法(IFDM)。
In this paper, an integrated finite difference method (IFDM) for numerical analysis of transient coupled heat and moisture flow in unsaturated soils is described.
结果表明，该模型的计算值与实测值吻合的非常好，说明通过优化法确定非饱和土壤水分特征曲线是可行的。
The result shows that the values of computation agree with the experimental data fairly well through comparing calculating soil moisture characteristic curve with the experimental one.
铵态氮水平运移的浓度受非饱和土壤水扩散率的影响，并随非饱和土壤水扩散率的升高而呈幂函数曲线下降。
The concentration of ammonium nitrogen in horizontal migration decreased with the increase in unsaturated soil water diffusivity in power function.
利用自制的入渗仪测定了土壤入渗过程中被禁锢的土壤空气压力大小及变化以研究禁锢土壤空气压力对非饱和土壤入渗水流的阻碍作用。
The magnitude and variation of air pressure entrapped in soil in the course of infiltration are measured by an installation developed by the author to investigate the resistance effect of air.
在此基础上建立了基于土壤孔隙形态学特征的随机网络模型，在孔隙尺度模拟了土壤中的水分运动过程，并预测了近饱和土壤水分特征曲线。
A spatially-random network model by using measured pore morphology was then set up to simulate the pore scale flow processes, and to predict the soil water retention curve near saturation.
这些土壤通常含有大量的粘土，很容易变成水饱和状态。
These soils usually contain large amounts of clay and easily become water-saturated.
当所有空隙中的空气被水取代后，我们说此时土壤是饱和的。
Soil is said to be saturated when the air in all the pores has become replaced with water.
当所有空隙中的空气被水取代后，我们说此时土壤是饱和的。
Soil is said to be saturated when the air in all the pores has become replaced with water.
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