查询词典 numerical

Based on chapter two, In chapter three, the method of multiple scales is introduced to the study of the multiple-dimensional nonlinear stochastic systems under random external excitation. Using method of multiple scales, we strictly deduce the equation of modulation of amplitude and phase. The effects of random excitations are analyzed; numerical simulations verify the results. Theoretical and numerical simulations show that when the intensity of the random excitation increases, the nontrivial steady state solution may be changed from a limit cycle to a diffused limit cycle.

在第二章基础上，第三章将多尺度法引入到相应的随机系统的研究中；严格推导了系统的约简方程，用矩方法求出稳态解应满足的方程，获得一些结果；并且数值模拟结果与理论推导的结果是一致的；并注意到，与其对应的确定性系统相比较，系统响应从周期解变为近似周期解，系统的相轨线从极限环变为扩大的近似极限环；随着激励带宽的增大，此扩大的近似极限环的宽度将增大。

I wrote it myself numerical analysis courses designed algorithm, which is part of the numerical fitting.

我自己写的数值分析课程设计的算法，这里是数值拟合的部分。

Based on the numerical simulation algorithm in this paper, numerical results for temperature field are given and analyzed.

基于我们构造的三维温度场数值模拟算法，给出了变压器运行过程中温度场在空间与时间分布的数值结果，并对所得到的数值结果进行了分析。

The numerical calculation of integration is an important branch of numerical analysis.

积分的数值计算是数值分析的一个重要分支。

This dissertation realizes one open architecture computer numerical control system for three axis numerical control engraving and milling machine using computer software, hardware and DSP technologies.

本论文利用计算机软件、硬件技术、数字信号处理器技术，实现了用于开放式三自由度数控雕铣床的计算机控制系统。

The numerical experiment is done by using finite element analysis. The dynamic responses are simulated for of integrate anchorage system and anchorage systems with different defects through 1-D and axis symmetry numerical calculate.

通过分析，锚杆—围岩结构系统的数值模拟解和试验结果都可用本文所建立的数学力学模型的分析解来拟合，这从参数反演角度进一步证明了所建立的模型是科学合理的，其分析求解方法是正确的。

Collecting patients which have typical clinical symptoms and have make a MRI check within 3 days, analysis the DWI image of 38 cases patients with cerebral hemorrhage, and make a relevant compare about the diffusion coefficient numerical of ADC at the same time,and it's performance almost the same with in DWI image;Also a relevant measuring and analysis have been done for the apparent diffusion coefficient numerical of edema inner or surrounding the lesions in ADC image.

收集临床症典型的三天以内进行MRI检查的患者，对经过DWI检查的38例脑出血患者的DWI图进行分析，同时进行ADC图扩散系数值的相关比较，影像表现与DWI图像表现大致相当，并对ADC图像上病灶中央和外周水肿区的表观扩散系数值做了相应测量分析。

According to fully implicit method, seepage model of low-permeability fractured gas reservoirs are discretized with finite difference method, and corresponding numerical model, coefficient matrix and matrix element are obtained; then based on modern software engineering, numerical simulation software was correspondingly developed with Fortran95 programming language

按照全隐式离散化方法，采用有限差分方法对低渗裂缝性气藏渗流数学模型进行了离散，得到了相应的数值模型、系数矩阵和矩阵元素。然后基于现代软件工程的基本思想，用Fortran95语言开发了相应的数值模拟软件

Numerical computation and numerical reconstruction of optical fields distribution are investigated in this paper.

本文研究了光场分布的数值计算与数字重构方法。

As an effective method of numerical computation, FEM is widely applied in numerical simulation of metal deformation process.

有限元法作为一种有效的数值计算方法已经被广泛应用于金属成形过程的数值模拟方面，但是有限元分析软件在使用过程中也存在许多问题，例如数值模拟解的精度问题，直接优化设计技术参数的问题。

Article 144 The Government of the Hong Kong Special Administrative Region shall maintain the policy previously practised in Hong Kong in respect of subventions for non-governmental organizations in fields such as education, medicine and health, culture, art, recreation, sports, social welfare and social

第一百四十四条香港特别行政区政府保持原在香港实行的对教育、医疗卫生、文化、艺术、康乐、体育、社会福利、社会工作等方面的民间团体机构的资助政策。原在香港各资助机构任职的人员均可根据原有制度继续受聘。

Small wonder, then, that the Chinese spend more in the shop than any other group of foreign visitors do .

这样的小惊喜，使中国顾客比任何国家的人消费得更多。