数值计算

This discrete Hamiltonian can be used by the lattice Green's function method to study transport properties in low-dimensional conductors.

这里得到的离散化哈密顿量可以进一步用晶格格林函数方法对低维导体的输运性质进行定量的数值计算。

An incremental-iterative method based on the Newton-Raphson method combined with constant arc length of incremental displacement vector is employed for the solution of nonlinear equilibrium equations.

本文解非线性平衡方程式式的数值计算方法是基於牛顿－拉福森(Newton-Raphson)法配合弧长控制法的增量迭代法。

Finally, allowable limit of the largest focusing error and the energy distribution of the light spot was given.

通过数值计算，分别得到了在小离焦量和大离焦量时光强沿光轴径向的分布曲线、中心光斑的大小以及在特定范围内总能量随离焦量的变化规律。

In addition, load responses and their matrix forms are presented, and the numerical results show the validity of transmission line model of high frequency conducted interference.

提出了高频传导干扰负载响应的传输线模型及其矩阵表示，并通过数值计算验证了传输线模型的正确性。

The asymmetric stripline is widely used in LTCC microwave integrated circuit system. Different kinds of discontinuity are often encountered in the circuit design, such as open circuits, steps, right-angle bends, T-junctions and so on. This paper successfully transplantes the equivalent circuit model of microstrip line discontinuity to the asymmetric stripline so as to deal with T-junction discontinuity and the branch-line coupler constructed by parts with various discontinuity. Compared with numerical results, the average error of S parameters is less than 2%.

偏心带状线广泛应用于LTCC微波集成电路系统中，其电路设计过程中也经常会遇到诸如开路端、阶梯、直角拐角及T型接头等各种不连续性问题；该文成功地将原有的微带线不连续性等效电路模型移植到偏心带状线上，从而分析了其T型接头不连续性和由其不连续性部分组成的电路组件分支线耦合器；与数值计算结果相比，其S参量的平均误差小于2%。

The whole process of fiber pull-out load and pull-out displacement was carried out by using numerical method.

完成了纤维拉拔荷载与拉拔位移全过程的数值计算。

The analysis of mechanical interacting between fiber and matrix was presented in this paper,the whole process of fiber pull-out load and pull-out displacement was carried out by using numerical method.

对纤维与基体的相互作用进行了力学分析，完成了纤维拉拔荷载与拉拔位移全过程的数值计算。

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。

Logarithms were invented to shorten the work of extended numerical computation.

人们发明对数来缩短运算冗长的数值计算工作。

We analyze vortex motion and noise spectrum with Lorentz force in type Ⅱ superconductors (T0K) by numerical simulation.

数值计算了Ⅱ类超导体(T =0K)中磁通在洛伦兹力作用下的运动和噪声。

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