查询词典 numerical method

However,authors still do not find the relevant references on convergence and symmetric problems of the semi-analytical solution.Based on the semi-analytical solution for Hamilton canonical equation theory,the formulations of the clamp and simply supported and symmetric boundary conditions on the Hamiltonian element are derived by the variational principle.Several numerical examples show that with increase of meshes,the convergence rate of the semi-analytical solution is faster than the convergent rate of traditional finite element method based on displacement.

①在厚度上没有任何位移和应力模式的假设，由于传递矩阵方法的引入，从理论上讲，不受板壳厚度或层合板壳层数的限制；②采用弹性力学的Hamilton正则方程半解析法，可以克服边界的局部化效应[8]；③由于在平面内或圆柱壳的曲面内采用了有限元法，所以一般的板壳问题不受结构侧面边界条件的限制，在复杂工程板壳问题上具有广泛的应用领域。

Compared with other systematic clustering method, UPGMA would be better for the numerical taxonomy of the capsicum varieties.

比较不同的系统聚类方法，类平均法能较好适合辣椒品种的数量分类。

This text for the test of the numerical video frequency system, the diagraph principle and method of the logarithms word video frequency signal carry on a study.

本文就数字视频系统的测试，对数字视频信号的测量原理和方法进行探讨。

Numerical experiments are carried out to examine the computation accuracy and convergence speed of the method for the free-term coefficient and Cauchy principal value integration.

对截断圆柱上的波浪作用力与解析解做了对比，发现本方法具有很高的计算精度，随网格的加密迅速收敛于解析解。

In order to improve the operation frequency, the self-suck resonator pulse detonation engine was founded, the ignition principle of the new engine use the method of shock focus autooscillation, so, it possess high ignition and operation frequency, many experts have taken experiment and numerical simulation. However, the physical processes in the resonator cavity are very complicate,the reliable theory haven't set up by now, require the further study.

为了提高脉冲爆震发动机的工作频率，自吸气共振型脉冲爆震发动机模型被提出，该新型发动机点火原理采用激波谐振聚焦点火方式，具有很高的点火及工作频率，许多专家对此进行了实验研究和数值模拟，但由于谐振腔内的物理过程非常复杂，到目前为止没有一套可靠的理论，有待于进一步研究。

Numerical examples show that the results are highly accurate in comparison with Newmark、Wilson-θ、Houbolt and central difference method.

算例表明解析逐步积分法和积分型直接积分法比中心差分法、Newmark、Wilson-θ、Houbolt法等有较高的精度。

The numerical example shows that the centroid method is not appropriate.

数值计算表明：该方法不可取。

A modified characteristic line method for numerical calculation of steady oscillating current is proposed.

本文研究了气液活塞泵的运动机理，提出了一种用于定常振荡流数值计算的"修正特征线法"。

Both the numerical results of these two chapters show that the Chebyshev polynomial approximation is an effective method in the study of system with random parameter.

数值结果表明Chebyshev正交多项式逼近法对于分析谐和激励和脉冲激励共同作用下的含有界随机参数系统的分岔现象也是有效的。

Euler equation ; chemical non equilibrium ; inviscid flow ; numerical simulation ; computational method

欧拉方程；化学非平衡；无粘绕流；数值模拟；计算方法

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新