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This paper considers the problem of numerically computing the almost periodic solution of the Lotka-Volterra system.

刘颖研究了Lotka-Volterra系统概周期解的数值计算方法。

This effect on the dynamic characters of slider was investigated numerically with perturbation method.

利用摄动法分析了纳米间隙下范德华力对磁头动态飞行特性的影响规律。

Chapter 3 analyzes numerically the effects for orbit calculation caused by orbital perturbation, parameter error and so on. A precise mathematical model of orbit calculation is given.

第三章通过数值法分析了各项轨道摄动和参数误差等因素的对轨道计算的影响，给出了精确的月球探测器轨道计算数学模型。

The propagation of picosecond deep ultraviolet laser pulse at wavelength of 193 nm in air is numerically investigated.

我们对193nm深紫外激光在大气中的传输进行了研究。

The flow field of the variable thrust motor nozzle with pintle was numerically simulated,and the throat pintle contour was optimized.

1引言对喉栓式推力可调固体火箭发动机内流场进行模拟，能直观了解TCSRM内部的工作情况。

The output characteristics of the averaging pitot tube flowmeter installed downstream a plane elbow was studied numerically.

采用数值模拟方法对处在弯管附件后均速管流量计的输出特性进行了研究。

The co-polarized and cross-polarized backscattering coefficients and polarizability of a layer of non-uniformly oriented metamaterial spheroids under illumination of an elliptic polarized plane wave are numerically simulated.

计算了任一椭圆极化入射下一层非均匀取向的随机分布异向材料粒子的同极化和交叉极化后向散射系数，以及随机粒子产生散射场去极化的极化度。

For this purpose, a new single mean scheme is presented to evaluate numerically the Poisson integral.

为此目的，本文提出一个单点平均的方案来对泊松积分进行估值。

At the chapters of theory analysis,constitutive equation of dusty is deduced from the results of the experiment and related theories about oblique shock wave.after that relationship of parameters reflecting flow-field characteristic are deduced from theories of shock wave polar .The paper set up conservation equations depicting gas and solid flow-field by double fluid model,thus equations and constitutive equation of granular phase form closed equations.then the paper uses AUSNT vector splitting method to numerically calculate the equations.

理论部分主要包括：利用实验测试结果以及斜激波理论测试出该堆积粉尘的本构方程，然后利用和激波极曲线理论得到反映流场特征参数的变化曲线；本文还利用双流体模型，建立了描述气—固两相流动的守恒型方程组，与本构方程一起构成封闭方程组。

In the computational methods of TPBVP, in order to reduce some difficulties involved in solving a TPBVP via adjoint variables, we discuss a direct method in which state and control variables are indirectly parameterized, The method employs a recently developed direct optimization technique that uses a piecewise polynomial representation for the state and control variables, thus converting the optimal control problem into a nonlinear programming problem, which can be solved numerically.

在数值解法中，为了减少解决两点边值问题共轭变量带来的困难，主要讨论了将状态变量和控制变量进行参数化的一种直接方法，这种方法采用了近段发展起来的使用分段的多项式来代替状态和控制变量的直接优化方法，然后最优控制问题就转化成可以用数值方法解决的非线性规划问题，使得迭代初值更加容易选取。

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。