查询词典 approximate method

Based on the small steepness parameter, three-layer incompressible, inviscid and irrotational fluid system of arbitrary depth is discussed by using the perturbation method, and a unified theory of nonlinear interfacial-internal wave propagation and the approximate nonlinear evolution equations for interfacial-internal elevations are given on the basis of the rigid upper boundary and the flat impermeable bottom.

基于波陡很小的假设下，利用摄动法，讨论了任意深度的二维不可压缩、无黏性、无旋的三层流体系统，在刚性上边界、平底不可渗透条件下，给出了界面内波传播的统一理论以及描述界面内波波剖面的近似非线性演化方程，最后还讨论了几种特殊情形下的近似非线性演化方程。

Iterative method is used for equations or equations approximate root of a common algorithm design methods.

迭代法是用于求方程或方程组近似根的一种常用的算法设计方法。

In chapter Ⅵ, we use local sampling method to approximate functions and geometric curves, and to find the solution of the Laplacian equation locally, several numerical results are presented.

第六章利用局部采样的方法来逼近函数和几何曲线以及求Laplace方程的局部解，并给出了几个具体的算例。

Besides, we also use local sampling method to approximate functions and geometric curves, and to find the solution of the Laplacian equation locally, several numerical results are presented. This PH.

此外，我们还利用局部采样的方法来逼近函数和几何曲线以及求Laplace方程的局部解，并给出了算例。

So, the approximate calculating formula of parabola and the length of ellipse arc is developed by the method of finding experience formula from point of view of simplifying the calculating process and getting certain accura...

本文从既能简化计算又能达到一定精度的设想，通过找经验公式的方法给出了计算机抛物线及椭圆弧长的近似公式，并给出了常用区间上计算抛物线和椭圆弧长的一次式和二次式。

Base vectors are selected for formulating the nonlinear mapping. An approximate explicit expression is formed by using the Nystrm method for nonlinear mapping which is not available originally. The data in the nonlinear input space is mapped into some linear feature subspace and fisher linear discriminant analysis is computed for the mapped data.

首先提取基向量；然后采用Nystrm方法，以基向量为训练样本，将形式未知的非线性映射近似表达为已知形式的非线性映射，这种近似的非线性映射将变量由非线性的输入空间转换到线性的特征子空间；最后对映射数据进行线性Fisher判别分析。

Numerical result describes flow characteristics of diffuser pipe and lockage gate etc. Model test shows that the method is reliable, and accuracy of the numerical model is approximate to 3-D numerical model, which is helpful for shape optimization.

数值计算结果的合理性得到了模型试验结果的验证，这表明轴对称模型接近三维模型的模拟精度，为竖井式进／出水口优化提供可靠、详细的依据，从而提高了模型试验的效率。

An algorithm including the determination of the model orders on approximate maximum likelihood parameters estimation method of m...

通过对上海和深圳证券交易所综合指数收益序列的分析，说明了此方法的可行性和有效性。

On the principle of the deformation work this paper words out a very simple method for approximate calculation of the extrusion force in the metalic plastic extrusion processes.

运用变形功原理，推导出求金属塑性挤压过程中挤压力的一种极其简捷的近似计算式。

Varnhorn applied the method of approximate approximation to functions which are defined on compact intervals and investigated the error.

Varnhorn给出了一维紧区间上函数的近似逼近方法，而且还可以控制近似逼近的截断误差。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。