数值分析

Then the solving of these equations is changed into a nonconstraint optimization problem.

病态线性方程组解法的研究是数值分析中的一个重要的课题。

By applying the cubic law and to a nonparallel smooth wedge-shape walled fracture, the distribution of pore pressure along the walls is derived and compared with the result of numerical calculation.

模型的径向应变结果分布与径向应力结果分布类似；(7)基于数值分析，探讨了裂隙水压力的分布形式，并以立方定律为基础，假设裂隙面为光滑表面，理论推导了光滑非平行裂隙中的水头分布公式，结果发现二者均为弧线分布形式。

For the former one, data obtained from testing cases of overcutting and squeezing were used for numerical simulation calibration and comparison.

在物理模型的数值分析中，考虑开挖面超挖与挤压的两种状况，并且与实验量测数据做比较。

Based on the finite element method, a fresh and unique type of footbridge, a papilionaceous partial tied arch footbridge, was analyzed. The influences to the whole structure's stress behavior, displacements, vibration periods and mode shapes under parabola and arc arch axis were discussed. Different selections of support forms, such as longitudinal slide or longitudinal hinge, led to different behaviors on structure.

针对一种新型而特殊的蝶式部分系杆拱步行桥，基于有限元数值分析比较抛物线形拱轴线和圆弧形拱轴线对整个结构受力、变形、周期和振型的影响，揭示选用纵向滑动支座与纵向不动铰支座时给结构性能带来的不同结果，对结构拉索张拉力的控制给出建议。

For the parison forming ,a explanation aboutspecialized method and theory basis of numerical simulation adopted by researchersin China and abroad is given.

介绍了模拟技术在吹塑型坯成型中的研究和发展状况，对国内外学者针对型坯成型过程运用的数值分析方法和理论依据进行了论述，并着重介绍了神经网络方法。

For the parison forming , the explanation had been given about method and theory basis of numerical simulation adopted by researchers at civil and abroad, and the method of neural net was review empnatically.

介绍了模拟技术在吹塑型坯成型中的研究和发展状况，针对型坯成型过程，对国内外学者进行数值分析的方法和理论依据进行了论述，着重论述了神经网络方法。

Localization length of the system with twoincommensurable perturbing frequencies is much larger than that of the systemwith one perturbing frequency.

数值分析表明：如果对振幅和相位调制的两个频率是不可约的，那么这个系统的局域长度要比单个频率扰动时大得多。

CFD-fluent simulation software and measurement are applied to establish the math models of exhaust gas concentration distribution and boundary conditions. Finite volume methods and PISO are used to solve the differential equations of exhaust gas distribution in a kitchen. After the adjustment and comparison with those from the practical measure, the simulation results of CO2 and CO concentration distributions accord with experimental ones.

运用CFD-fluent模拟软件和实测相结合的方法，建立废气的浓度和扩散分布的数学模型与边界条件，利用数值分析法中的有限体积法和PISO算法对厨房内废气分布的微分方程进行离散和求解，对模拟结果进行校正并与实际测试结果进行比较。

The pyrogenation relationship equation among staying time, temperature and the rate of volatile is acquired.

数值分析固态医疗垃圾在SMW-CFBC燃烧时，首次采用关联矩模型和PDF模型相结合的模型来确定存在组分浓度脉动、温度和反应度脉动情况下紊流燃烧速率，同时，考虑垃圾颗粒的挥发析出反应所引起的变质量对流体或气相中湍流的作用，颗粒变质量过程对气相中湍流反应的影响；有反应的颗粒相自身的影响问题；湍流对颗粒反应的影响。

The small-scale prototype of the planetary ringy gear non-beam overground unit of the pumping system in the field is carried out based on the scheme design, and the numeric analysis and the experimentation research on the kinetic character of the small-scale prototype are presented.

在行星齿环式无游梁抽油机方案设计的基础上，研制出该抽油机的小型样机，并对样机的运动性能进行了数值分析和试验研究。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。