数值弥散,numerical dispersion英语短句,例句大全

数值弥散,numerical dispersion
1)numerical dispersion数值弥散
1.The authors use an operator split upwind equalization scheme for overcoming the numerical dispersion and oscillation problems appeared in water pollution simulations problems where the convection is dominated.各种常见的数值解法在以对流为主溶质运移问题的求解中都会遇到困难,如用有限单元法或有限差分法时,会产生数值弥散与过量这两类误差。
2.Then this paper studied the effect of diffusion coefficient on concentration distribution and the conditions of substitution with numerical dispersion for physical diffusion.本文通过求一对流-扩散方程的半解析解,分析了扩散系数大小及影响扩散系数的参数对计算出的浓度分布的影响;通过将该半解析解与忽略扩散的数值解进行对比分析,讨论了数值弥散代替物理扩散的条件。
3.Influences of reservoir heterogeneity and dip angle on unstable-state displacement of gas flooding in an oil field have been studied through numerical simulation,adopting dimensionless quantity batch and high-density grid eliminating numerical dispersion techniques,which could identify multiple phase flow patterns.应用标定多相流态的无因次量组及高密度网格消除数值弥散技术,采用数值模拟方法研究了针对矿场规模的注气驱替中非均质程度、倾角数对非稳态驱替动态的影响。
2)ADC value表观弥散系数值
1.DWI signal and ADC value were evaluated in cerebratis stage,capsule formation stage,and evolution stage of brain abscess and compared with those.目的研究磁共振弥散加权像及表观弥散系数值在鉴别脑脓肿与坏死囊变脑转移瘤中的应用价值。

英文短句/例句

1.Different Methods of Measuring ADC Values in Normal Human Brain正常人脑表观弥散系数值定量测量的方法
2.We should delineate the diffusion direction if we want to do quantitative studies on the diffusion of corona radiata.而放射冠的表观弥散系数值则受其影响,定量研究放射冠的弥散应该描述其弥散梯度方向。
3.Value of diffusion-weighted imaging and apparent diffusion coefficient in diagnosis of brain metastases tumor磁共振弥散加权成像及表观扩散系数在脑转移瘤诊断中的价值
4.Diagnostic Value of Average Apparent Diffusion Coefficient of Diffusion-Weighted Imaging for Leukoencephalopathy in Neonates and Children磁共振弥散表观系数均值对新生儿及儿童脑白质病变的诊断价值
5.Relations between the change of relative apparent diffusion coefficient (rADC) in cerebral infarction and the prognosis of thrombolysis in common carotid artery(CCA)相对表观弥散系数与脑梗死颈总动脉溶栓预后
6.Preliminary Research on Inversion Numerical Method of Solute Transport Dispersion Parameters溶质运移弥散系数反演数值方法初步研究
7.The Value of Apparent Diffusion Coefficient Mapping and Perfusion-Weighted Imaging for the Diagnosis of Ischemic Tissues in Cerebral Infarction磁共振表面弥散系数及灌注成像在脑梗死中脑组织缺血状态的诊断价值
8.ADC changes of glioblastomas after surgery:Possible prediction of radiotherapy response and TTP胶质母细胞瘤术后表观弥散系数预测放射治疗疗效和无进展生存期的研究
9.Numerical Solutions of Two-Dimension Fractional Advection-Dispersion Equations二维分数阶对流-弥散方程的数值解
10.The Value of Quantitative Study of ADC in the MRI Diagnosis of Brain Tumors;弥散系数定量分析在脑肿瘤磁共振诊断中的价值
11.Numerical simulation of convective-dispersive equation for soil-root nutrient transfer using MATLAB土-根系统养分运移对流-弥散方程数值解的MATLAB实现
12.Values of diffuse weighing imaging and apparent diffusion coefficient to differentiate between high-grade astrocytoma and brain abscess in capsule-period扩散加权成像和表观扩散系数值鉴别高级星形细胞瘤与包膜期脑脓肿的价值
13.Value of diffusion weighted imaging and apparent diffusion coefficient values to the differentiation of intracranial cystic diseases扩散加权成像与表观扩散系数值测量在颅内囊性病变鉴别中的应用
14.Aim: To explore apparent diffusion coefficient (ADC) in the diagnosis of infarction core and ischemic penumbra(IP) affter acute cerebral infarction.探讨磁共振表观扩散系数(ADC)值对急性期脑梗死核心和缺血半暗带(IP)的诊断价值。
15.K/S(absorption coefficient/scattering coefficient)吸收系数/散射系数（用以表示颜色深度的值）
16.Numerical Simulation Researches on the Irradiation-induced Mechanical Behaviours of the Dispersion Nuclear Fuel Plate弥散型核燃料板辐照力学行为的数值模拟
17.Experimental Study and Numerical Analysis on Gas Dispersion Regularity in Gob采空区气体弥散规律的试验研究及数值分析
18.An Objective Method for Estimating Diffusion Coefficient in Numerical Weather Prediction Models确定数值预报模式中扩散系数的一个客观方法(英文)