数学模型

The result showed that the conventional and optimum design model of complex multi-evaporation had good universality. The new algorithm could be used to solve model more stably and more effectivly. The energy-saving effect was notable when all kinds of energy-saving measure were adopted and T0, Tk, tpj,Δti were optimized. In these conditions, the annual cost of optimum design decreased by 36.44% and 40.76% respectively than conventional design for the complex cross-feed and parallel-feed quadruple-effect evaporation system with solid separation. An optimum design software for multi-evaporation was developed, which had strong function, amity interface and easy maneuverability. This software may be applied to conventional and optimum design of multi-evaporation system under different conditions.

研究结果表明，复杂多效蒸发系统常规及优化设计的数学模型具有很强的通用性，求解模型的新算法稳定且高效；同时采用各种节能措施且对T_0、T_k、t_、Δti进行优化的系统节能效果最显著，对有固相析出的复杂错流、平流四效蒸发系统在上述情况下的优化设计比没有节能措施的常规设计可分别节省年总费用36.44%和40.76%；用可视化语言Visual Basic 6.0 编制的多效蒸发设计软件，功能强大、界面友好、使用方便，可用于多种流程、不同情况组合的多效蒸发系统常规及优化设计计算。

Hydro-pneumatic suspension ; Mathematical model ; Nonlinear ; Computer simulation ; Stiffness ; Damping ; drilling machine ; fractal dimension ; fractal model

吉林大学；王智明油气悬挂；数学模型；非线性；计算机仿真；刚度；阻尼；钻机；分形维数；分形模型

Then the intellectual control technology of vacuum circuit breaker is discussed particularly. As a control object, the bi-stable permanent magnetic actuator is separated into basic principle so as to determine the nature of the whole. The direct-coupled models of magnetic fields for analysis and for calculation are presented. The static and dynamic characteristics of the models and dynamic behavior analysis and matching analysis for the vacuum circuit breaker with bi-stable permanent magnetic actuator are also discussed. For a further study, fuzzy neural network control technology based on synchronized-closing operation of vacuum circuit breaker is analyzed and the research conclusion is used for realizing the synchronized-closing of vacuum circuit breaker in the future.

论文首先分析了永磁机构的结构和工作原理；然后主要针对双稳态永磁机构真空断路器分析了在开断和关合过程中的静态磁场耦合模型、动态分析数学模型和真空断路器的动态特性，并就永磁机构和真空断路器的匹配进行了分析；最后分析了基于双稳态永磁机构真空断路器的同步操作问题，深入研究了同步操作的模糊控制原理和算法，研究结果为最终实现永磁机构真空断路器的同步操作奠定了基础。

The expression of one-dimensional mathematical model of vertical migration of ammonia in the CRI system is:The parameters in the CRI model are determined as following: the retardarce coefficient is determined by static isothermal absorption experiment, the velocity of sewage travel through the soil column is determined by permeability test, the vertical dispersion coefficient is determined by test the electric conductivity of tracer in the dispersion experiment, the rate of nitrification and denitrification is determined by test of Baps technology.

依据单一氨氮、硝氮配水条件下的试验结果，引入多孔介质的溶质运移理论及对流-弥散方程，考虑NH4+-N在CRI系统中的运移受到对流和水动力弥散作用的影响，并吸附-解吸、硝化与反硝化3个过程，首次将配水流经CRI土柱的孔隙水流速方程与CRI土柱内发生的、以氧为约束条件的硝化、反硝化过程联系起来，建立了CRI系统一维垂向氨氮运移转化数学模型，表达式为：研究分别通过静态等温吸附实验率定了模型方程中的阻滞系数、通过渗滤试验测定了土柱中的孔隙水流速、通过测定弥散试验中示踪剂的电导率确定了纵向弥散系数、通过气压过程分离技术测定了土柱中的总硝化与反硝化反应速率常数，最后通过测定土柱沿程氧化-还原电位的方法分析氨氮在CRI系统中的运移转化机理。

This paper studies environmental factors which influences Shanxi market of BYS Pharmaceutical Corporation applying theories and means of marketing and administration, makes qualitative and quantitative evaluation to exterior and interior environmental factors by using EFE and IFE matrix, and analyzes the actual place strategy. This thesis constructs generic mathematic model to estimate franchisers' integrated managerial abilities in order to choose the right middlemen; on how to evaluate dealers' performances, conceives mathematic model of franchisers' performance evaluation pole method to appraise their performances, and applies Fussy evaluation model to estimate the place pattern of pharmaceutical corporation, and makes embedded research into place motivation, conflict management and place improvement.

本文运用市场营销管理、管理学的理论和方法，研究了影响BYS制药企业山西市场营销的环境因素，运用EFE矩阵、IFE矩阵对外部环境、内部环境关键要素进行了定量定性评价；对营销渠道策略进行了分析研究，在对中间商的选择方面，论文构造了中间商的综合经营能力评价与选择的一般数学模型并运用其对中间商的综合经营能力进行了评价；论文对中间商绩效评价进行了探讨；运用Fussy评价模型对BYS制药企业营销渠道模式进行评价；并对渠道策略中的激励、冲突管理以及渠道改进等方面的内容进行了深入的研究。

The digital simulation of thedynamic processes under step load input and supply oil pressure fluctuation were carried on by MATLAB. Analysis of the dynamic characteristics was done with the changes of the supply pressure, load, structural parameters of spherical hydrostatic bearing and the effective bulk modulus of oil. The conclusions show that structural parameters of the spherical bearing and the effect bulk modulus of oil have significant influence to dynamic characteristics, but the elasticity deformation of interior supporting collet has very small influences on the output response characteristics of the suspension system. The collets deformation can be neglected on the project.

在此基础上，建立了考虑内支撑筒的弹性变形与否时悬浮系统的数学模型，同时，建立了线性化的仿真模型，利用MATLAB对阶跃负载输入和油源压力脉动输入下的系统进行动态过程的数值仿真，结果表明球面副的结构参数，油液的有效体积弹性模数对系统的响应特性有明显的影响，而内支撑筒的弹性变形对悬浮系统的响应特性的影响很小，在工程上可以忽略其弹性变形。

On the basis of stripping principle, the mathematical model of removal of tiny moisture in the complexing agent was established, and the solution of this model was carried on by using the software of Matlab.

针对在硼同位素的分离过程中，由于三氟化硼的特殊性质，必须对整个系统的水质量浓度进行控制，而系统中的微量水主要由络合剂引入的问题，根据汽提原理，对络合剂中的微量水份脱除建立数学模型，并利用Matlab软件对此模型进行求解。

In chapter 7, quality loss cost is first used in the model of simultaneous design of tolerance, and economically attainable accuracy of position is first considered as constraint condition. It is first proven that the function of simultaneous design of tolerance is non-convex program; discrete and continuos Simulated Annealing are introduced; the optimum software to solve this model is given.

第七章首次将质量损失成本用于公差并行设计的优化数学模型中，并首次考虑位置精度的经济加工精度范围作为约束条件；论证了公差并行设计优化模型的非凸规划问题；着重介绍了离散型和连续型的模拟退火算法SA；研制了公差并行设计的优化软件。

In the thesis, a mathematical simulation model is developed to describe the low-temperature multi-effect distillation configuration, including the low temperature multi-effect distiller, the preheater, the condenser, the flashing box and the thermal vapor compress, which considers the boiling point elevation and the temperature losses in the demister and vapor transmission lines.

本文建立了描述低温多效蒸馏海水淡化系统，包括的蒸发器、预热器、冷凝器、闪蒸罐和喷射器的热力过程数学模型，模型考虑了盐水沸点升高、蒸汽在除沫器和管道中流动因摩擦引起的温差损失在内的多种热力学损失。

The mathematical model of heat and moisture absorbing and desorbing process of porous envelop is presented in this paper, and the model takes latent heat into consideration.

本文建立了多孔围护结构表面热湿吸放过程的数学模型，模型中吸放热过程考虑了潜热热量。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。