数值分析

The operating process of liquid apogee engine (N2O4/MMH) thrust chamber is studied. By applying the SIMPLE algorithm with staggered grid, the numerical model is established. The atomization mechanism and decomposition combustion of hypergolic rocket propellant are considered in the model.

研究了远地点发动机(N2O4/MMH)的推力室工作过程，考虑了自燃推进剂的雾化、蒸发以及化学反应流动过程，采用交错网格系统的SIMPLE算法，得到了不同边区冷却流量对推力室的内流场和燃烧效率的影响结果，数值计算的结果与理论分析相符合，为推力室工作过程的稳定性分析提供了重要参考。

Two methods for solving ill-conditioned linear equations, composite structure method and discrete freedom compensation method, are proposed.

通过对3个数值算例的比较分析表明，这两种方法可以满足结构弹塑性分析计算的速度和精度需要。

Numerical calculation of FEM and experimental investigations are used in the present research. The influence of loading condition and size of indenter on the tensile strength of rock has been investigated. The results obtained by numerical calculation and experiments show that tensile strength of rock will increase with the increase of indenter size.

通过有限元数值计算与理论分析相结合的方法，对不同载荷接触条件和接触面宽度角下的岩石抗拉强度进行了深入分析，结果表明，在圆弧形和平台加载条件下计算的岩石抗拉强度随载荷接触宽度角α的增大而增大。

Effect of various parameters on the induced voltage was examined by numerical simulation.

对自然雷电的9次回击过程在水平导体上产生的感应电压特征进行了分析，并利用数值模拟分析了各种参量对感应电压的影响。

It is fitted to the intelligence interface and numerical value calculation. Through topology form and topology analysis as well as the graphical knowledge and the general network system equipment state analysis the graphic knowledge can be translated into inferable knowledge.

通过对可视化的电力系统结构图进行拓扑形成、拓扑分析及系统设备状态分析完成图形知识到计算推理所用知识的转化，从而得到既适合数值计算又适合智能推理的通用网络模型。

Concrete confined coefficient K by the numerical integral of whole section using strip method is put forward for the bearing capacity formula of eccentrically compressed SRC column.

通过条带法的全截面数值积分对混凝土约束系数K进行分析与探讨，经过试算与分析配有圆钢管的钢骨混凝土柱的应力应变特征，提出核心混凝土极限公式和偏压柱承载力公式。

Through the analysis based dislocation theory and MD simulations,the connection between atom properties and macroscopic strain rate sensitivity of metals has been established by using Orowan\'s relationship as the bridge. The influences of interatomic potential and atomic mass on the stress dependence of dislocation velocity of FCC metals and strain rate sensitivity have been examined through MD simulations of a moderate scale.

依据位错运动的Orowan关系和研究位错速度对应力依赖关系的分子动力学方法，提出了研究金属原子性质与其应变率敏感性关系的分析方法；然后开展分子动力学模拟来研究位错速度对应力的依赖关系，依据数值模拟结果分析原子性质对金属应变率敏感性的影响。

The numerical calculation and influencing factors of casing well resistivity logging are studied.The response equation of resistivity logging is established based on the electromagnetic field theory and the distribution characteristics of the electric field in the intermediate zone.

根据电磁场理论和中场区电场分布特点，建立套管井地层电阻率测井测井响应方程，用传输线理论分析了套管井测井数值计算的可行性，分析了水泥环、地层电阻率、套管厚度等因素对测井响应的影响。

The error of quadratic interpolation method on sine wave signal was analytically studied and numerical evaluated in this paper.

该文从理论分析和数值仿真两个方面，对二次插值算法在正弦信号分析中存在的误差进行了详细的研究，得到了误差范围的解析表达式。

The development and research progress of ground deformation induced by pipe jacking construction was reviewed in the paper.

对顶管施工引起的地面变形计算方法的发展概况及研究进展进行了分析，把地面变形计算方法归纳为现场监测方法、数值计算方法、理论方法和实例数据分析法，并进行了比较，以更好地指导工程施工。

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。