查询词典 variational method

The Discrete Variational Method for molecules and clusters is described in detail.

文中首先描述了离散变分方法的理论基础—密度泛函理论及其局域密度近似。

The results indicate that the hybrid variational method can correctly estimate soil moistures in the deep layers.

试验的结果表明混合四维同化方法具有较好的反演深层土壤湿度的能力。

In addition, the variational cycle or N value method can decrease the capture time to the desired extent for different applications.

而改进的变周期或变N值的方法也可使捕捉时间降到合适的长度，以适用于不同场合。

By using the variational method the roughness length is calculated and is equal to 0.03 m.

用变分方法计算的地面粗糙度为0.03m。

The quasi-Newton iterative method in optimization is used to solve the numerical solution of this variational problem.

该模型最终由最优化领域中的拟牛顿迭代法实现数值求解。

Based on the Galerkin Method the variational problem for the point source 2.5-dimensional electricfield is derived and the corresponding finite element equations are obtained.

基于Galerkin法推导了点源2.5维电场的变分问题，得到了对应的有限元方程组。

With its theoretical basis as well as its wide prospects of application, this objective selecting method is probably a way towards the finding of the optimal weight factors in the variational problem.

这种最优选取方法，既有坚实的理论基础，又有广泛的应用前景，开辟了一条通向寻找变分问题最优权重因子的途径。

This paper deduces the functional of generalized mixed variational principle for the plane problem of the orthogonal anisotropy, on the basis of which, the generalized mixed finite elements method for the problem is established.

推导了正交各向异性平面问题广义混合变分原理的泛函，以此为基础建立了该问题的有限元广义混合法。

Firstly, the mesh dependent norms are introduced and the equivalent mixed variational problem of the fourth order obstacle problem is derived by the penalty method.

首先，引入网格依赖范数，通过加罚方法得到了与四阶障碍问题的等价的混合变分形式。

In order to make use of time-frequency characteristic of signal,a new method of variational estimation on signal frequency by using AR model power spectrum estimation,designing band-pass filter to gain approximatively source signals and underdetermined mixed matrix,and constructing completed observation signals by expanded subspace primer vector is proposed.

充分利用信号的时频特性，提出了AR模型功率谱估计法滑动估计信号频率，设计带通滤波器近似获取源信号和欠定混合矩阵，以及扩展子空间向量基构造完备观测信号的方法，将问题转化为完备情况下的盲分离，最后运用FastICA方法实现了信号盲分离。

Chimborazo and Cotopaxi, took me by the hand.

越过琴博腊索山和科托帕克西山。

This car is in a good condition.

这辆车的状况很好。