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- One-parameter models of soil hydraulic parameters 土壤水力参数的单一参数模型
- soil hydraulic parameter 土壤水力参数
- use USDA soil texture classification system instead the original one of BIOME3 and reset the soil hydraulic parameters; 并且采用更为完善的USDA系统土壤分类数据库,从新设定土壤参数;
- The numerical inverse method is an indirect method to determine soil hydraulic properties. 数值反演方法是间接确定土壤水力性质的方法之一。
- Rill erosion processes and rill flow hydraulic parameters. 土壤溶质运移参数估计图解方法。
- Polyacrylamide (PAM) can enhance soil structural stability however its influence on soil hydraulic conductivity is not very clear. 摘要聚丙烯酰胺(PAM)可增加土壤结构的稳定性,但它对土壤水力传导能力的影响尚不清楚。
- The indeterminacy of hydraulic parameter of the pebble rapids on the upper reaches of the Yangtze River is one of the reasons of failure in rapids regulation. 摘要长江上游卵石急滩经过多次整治,仍然碍航,水力指标的不确定性是卵石急滩整治不成功的原因之一。
- Studies of soil water movement in GSPAC system and modeling wa ter flow necessitate the determination of soil hydraulic properties. 研究GSPAC系统的水分运移机理和建立统一的水系统模型需要确定土壤水分运动参数。
- The measurement error may occur due the soil sample for determining the hydraulic parameters is always not the same sample for determining the solute transport parameters. 目前由于实验系统和研究方法的限制,在测定水力参数和溶质运移参数时所采用的土壤样本不一致,产生了样本误差。
- The non-uniqueness problem is always encountered when numerical inverse method coupling with one step outflow experiments is employed to determine the soil hydraulic properties. 结合单步出流实验的数值反演方法在确定土壤水力性质时会遇到解的非唯一性问题。
- The random fracture network is generated by using Monte Carlo method, and unsaturated hydraulic parameter is build by fractal geometry method for different hydraulic aperture fracture. 摘要使用蒙特卡洛方法建立了随机裂隙网络,并使用分形几何方法建立了不同水力隙宽裂隙的非饱和水力参数。
- Soil hydraulic characteristic parameters can be estimated accurately using the Pedo-transfer Functions (PTFs) depending on soil fundamental parameters which are easy to get such as grading of soil, organic content and bulk density. 然而可以通过容易得到并能保证试验精度的土壤基本物化特征参数,如:颗粒级配、有机质含量和土壤容重等,利用土壤传递函数(PTFs)可以较准确地估算出土壤水力特性参数。
- Appling different rheological models would cause in great effect on calculation of drilling hydraulic parameters. 选用不同的流变模式对钻井水力参数的计算影响很大。
- hydraulic parameter of rapids abating 消滩水力指标
- The mathematical model,the method for optimizing design,and the design princi-ple of hydraulic parameters are proposed to make head-flow curve flat. 流量曲线特点,提出了旋喷泵叶轮的优化设计数学模型、叶轮优化设计方法及水力参数的设计原则。
- The pollution straps of one-side mirror model and two-side mirror model were simulated and compared by using the hydraulic parameters of the Lishui River in Hunan Province. 根据湖南省澧水某段枯水期的水文参数 ,对一侧镜像模型和两侧镜像模型的污染带进行了模拟 ,发现一侧镜像模型由于忽略了一个虚源而使河流中污染物的浓度分布产生较大的误差 ,从而导致污染带异常 ;
- soil hydraulic characteristic parameters 土壤水力学参数
- Different combinations of PDC drilling bits( hydraulic parameters are comprehensively reflected by flow field energy transformation at oil well bottoms. PDC水力参数的不同综合表现为井底流场能量的变化。
- Some plants push their roots deep into the soil. 一些植物的根深深长入土中。
- unsaturated soil hydraulic conductivity 非饱和土壤水力传导度