数学模型

By choosing Boltzmann constant adequately, and combining with a mathematical model based on stochastic serviec system theory to analyze combat effectiveness, the shortcut to solve quantiatively the problem about optimization of a weapon system′s combat configuration is presented.

在防空导弹武器系统的作战布局优化中使用模拟退火算法，选取适当的Boltzmann常数，结合基于随机服务系统理论的作战效能分析数学模型，得到了较为快捷的定量优化武器系统作战布局的方法。

We can find from the research that the IR and XRD spectrogram shows the exists of H_3BO_3 on the surface of cellulose;there is H~+ released form the solution and the complexation proportion of the boric acid-glucose in the solution is 1:1, the boric acid-mannitol is 1:2 and the boric acid-N-methylglucamine is 1:2;and the half experienced mathematics model experiment on analyzing PH shows that the cellulose's adsorption of the boracic acid is mainly chemical adsorption with a proportion of 1:1 while physical adsorption with the H~+ released during the reaction plays a role as assistance.

研究结果表明，通过IR和XRD谱图分析，表明纤维素上吸附了H_3BO_3；硼酸和葡萄糖、甘露醇、N-甲基葡萄糖胺在水溶中络合比分别为1：1，1：2，1：2，同时溶液中有H~+释放出来；应用半经验数学模型分析pH值-浓度吸附实验，表明纤维素对硼酸主要以化学吸附为主吸附比为1：1，以物理吸附为辅，反应过程中释放出H~+。

The thesis is organized as follows:In Chapter 1,a new partial differential equation model for Spontaneous Potential log in heterogeneous formations is introduced.At the same time,the existence and uniqueness of weak solution to the problem are proved,and the problem of resistance identification in SP log is studied.Furthermore,a jump condition capturing finite difference scheme is proposed and applied to solve such elliptic interface problems.The effects of various factors on SP response,which include objective layers resistivity,bed thickness,bore-hole diameter,invasion and water-flooded zones and so on,are investigated quantitatively by the proposed method, and satisfactory results are obtained.

具体安排如下：第一章首先建立复杂地层中自然电位测井的偏微分方程数学模型，证明了该边值问题弱解的存在唯一性，在此基础上研究了自然电位测井电阻率识别问题：然后发展了用于求解椭圆交界面问题的间断捕捉有限差分方法，利用该方法定量分析了目的层电阻率、地层厚度、井径、侵入带和水淹层等因素对自然电位测井响应的影响，取得了满意的结果。

It mainly includes the following aspects: It summaries the characteristics of various kinds of calculatingmethods systematically, such as diameter error method, roundness errorand cylindricity error and establishes geometric parameter measurementpattern of the borings, which is fit for the computer on-line automaticprocessing.

针对测量机研制的需要，论文研究了缸孔几何参数的在线测量方法和数学模型、专用传感器设计、测量的信号处理、测量精度的实现以及测量系统的设计等理论与关键技术问题。

Chapter 2 is seepage numerical model and boundary condition.

第二章为渗流数学模型及定解条件。

Through an in-depth analysis of modification theory for the top profile together with its purpose, the modification principle and the design principle of the discharge port are presented. The boundary curve equation of the maximal area of discharge port is deduced in theory and the corresponding mathematical model is established.

通过对齿端修正理论及目的的深入分析，确定了齿端修正的原则，并提出了型线齿端修正的涡旋压缩机排气孔的开设原则，详细分析了排气孔理论上最大开设区域，并推导了区域边界方程，建立了相应的数学模型。

The boundary element method is applied to find a numerical model on 2-D orifice in this paper.

本文利用边界元法建立了一个求解二维孔口的数学模型。

The mathematics model and the method of numecial simulation can be analysised, using the boundary element method.

采用边界元方法分析了船舶腐蚀防护的数学模型及数值模拟的方法。

The mass transfer resistance of boundary layer in the strip phase inside the hollow fiber and boundary layer in the feed phase, the diffusion in the membrane phase and the interfacial chemical reactions at the liquid membrane interfaces are taken into account comprehensively.

该数学模型同时考虑了手性对映体与载体的反应和料液相边界层、接收相边界层以及支撑液膜相的扩散阻力。

The observed partition coefficient between the feed phase and the membrane phase, the stripping phase and the membrane phase, mass transfer resistance of boundary layer in strip phase inside the hollow fibers, boundary layer in feed phase and the diffusion in the membrane phase are taken into account in the model equations.

该数学模型同时考虑了手性对映体的表观分配行为和料液相边界层、接收相边界层以及支撑液膜相的扩散阻力。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。