查询词典 method of undetermined coefficients

The analytical solution of 1-D convectional-dispersion differential equation with the hydrodynamic dispersion coefficients so determined can very well simulate the salt and water movement processes in the soil columns.

采用如此计算得到的水动力弥散系数D值代入经典的一维对流-扩散方程能很好地预报饱和土壤的水盐运移。

The results show that: the degree of deformation and yield-region will decrease as the fraction coefficients increasing; the influence of fraction coefficient f1 between clip-pieces and anchor plate is more remarkable than f2 between anchor plate and under board, the influence of f2 can be negligible.

有限元分析结果表明：随着摩擦系数的增大，锚环的变形和塑性屈服区域面积将逐渐减小；夹片与锚环之间摩擦系数f_1对锚具特性的影响要比垫板与锚环之间摩擦系数f_2所产生的影响要显著得多，后者的影响几乎可以忽略。

Aim To study the effects of walk-off angle on the coefficients of reflection and transmission.

目的 研究离散角对反射与透射系数的影响。

With the changing of the parameter of interface mechanical property, R, the evident difference can be seen from curves of incident angle vs coefficients of reflection or transmission.

当层合板中弱界面的力学性能参数不同时，以入射角为变量所得到的透射系数和反射系数曲线呈现出明显差异。

The authors calculated the energy deposition coefficients of 4He + on C and Cu under the normally incident condition by using the improving bipartition model which accounts for the angular correlation of energy losses partly.

利用部分地考虑了能量损失的角关联的改进离子输运双群模型，计算了4He＋离子垂直入射到C和Cu上的能量沉积系数，改进了早期的离子输运双群模

In the thesis, it was shown that the latitude variation of the angular dispersion should mainly depend on square sum of lower degree deduced Gaussian coefficients if the non-axial-dipole component vs. the axial-dipole component is small.

本文证明，如果地磁场非轴向偶极子分量相对轴向偶极子分量为小量，那么VGP角散布的纬度变化主要由低阶约化Gauss系数的平方和决定。

Based on the three dimensional surface data of the face and skull, methods of geometric analysis on them are presented through these parameters with their numerical calculating methods under the landmarks of the anthropologist and anthropometrist are proposed,which is the foundation of the statistical model that will be used in the field; 4Geometric analysis methods that based on the approximation coefficients of spherical harmonic functions are proposed.

以三维面皮和颅骨数据为基础，分别给出了基于公安法医学标志点和人体测量学标志点的几何分析主要途径和方法，确定了几何分析的主要参量，并给出了相关的计算方法，为建立颅面统计模型奠定基础； 4基于球面调和函数的颅面形态学的几何分析方法。

It is pointed out that Ming Antu was the first inventor of Catalan numbers in the world . He constructed one geometric model, in which some infinite series with Catalan numbers as coefficients were contained.

指出了明安图是世界上第一位卡塔兰数的发明人，他构建了一个几何模型，在这个几何模型中包含了用卡塔兰数作为系数的无穷级数。

Analytical expressions for their degree distributions and clustering coefficients are derived, which depend on the dimension of the associated Apollonian packing.

对HDRAN、V-HDRAN及EAN这三个网络模型的拓扑性质进行了解析计算和数值模拟，解析与模拟结果相吻合。

The present criterion of structure design mainly adopts the methods of approximate probability limit state design, but adopts the familiar multiply coefficients practical expression in engineering domain formally.

我国现行结构设计规范主要采用的是近似概率极限状态设计方法，形式上则采用了工程领域熟悉的多系数实用表达式。

Metrorrhagia is also gynaecological problems of common diseases.

崩漏是妇科常见病也是疑难症。

WordFTP gives you the convenience and timesaving you need.

wordftp让您的方便和省时您所需要的。