数学模型

The paper studies the degradation rule of physical mechanical property of vulcanizate during the period of heat ageing, which involves the relationship between the property, variable temperature and time. The analytic expressions for the frictional temperature rise of the interface were presented according to the theory of heat conduction of solid when a tire slides of rolls along the road.

本课题针对影响汽车轮胎橡胶机械性能的温度老化模型进行了一定深度的理论研究，并进一步研究轮胎的在滑动、滚动时的温度场的数学模型，在理论上论证了温度、压力是影响轮胎行使安全性能的重要因素，并以其作为最终的监测对象。

Improvement of boundary treatment in mathematical model of flood diversion area ;2. Based on this,a plane 2-D water mathematical model for the flood diversion area is set up.

在此基础上，建立了平面二维水流数学模型，并将该模型运用到湖北龙骨湖、沉底湖分蓄洪区实际计算中，取得了令人满意的结果。

In chapter 2, a simple model was proposed to study the relation between the injected amount of an analyte and the water plug length preliminarily injected in field-amplified sample stacking.

第二章：从理论上推导出描述水柱长度与分析物进样量关系的数学模型，并用实验进行验证，实验结果与模型所示趋势基本吻合。

In this article it raises a mathematical model for this problem according to the practical experiences of production, and unifies simulated annealing algorithm with genetic algorithm in view of the model to solve the fast convergence problem and weak partial searching ability problem in genetic algorithm.

根据生产上的实际经验提出了问题的数学模型，针对该模型，将遗传算法和模拟退火算法结合，解决了遗传算法的收敛过快以及局部搜索能力不强的问题。

The quantity computed is the expected clutter power at the output of any specified range gate by the method of integrating reflected energy between constant Doppler loci in range-gate circles with a model of sum and difference antenna gain pattern for APAR. Base on the analyzing of APAR terrain clutter spectrum, Rayleigh, Correlated Log-Normal and Weibull distribution terrain clutter of APAR general pulse signal was simulated with the method of zero memory nolinearity transform.④The Doppler frequency of target echo is simulated on video frequency in this dissertation.

该软件采用了用C语言建立框架结构，而在程序高重复部分和有运算速度要求的地方，用汇编语言编写具有高并行能力程序的方法，不仅满足了系统高运算速度和实时性的要求，也使得软件系统结构模块化，代码具有良好的维护性和重用性；③对机载相控阵雷达HPRF、MPRF的和、差通道地面杂波功率谱进行了较为全面的研究，通过建立由四个子波束构成的机载相控阵雷达杂波和差波束天线方向图数学模型，选取体现高度线杂波的修正的地面后向散射模型，以载机平飞为例，采用沿距离门——等多普勒线区域积分的方法，得到了杂波功率谱，并利用零记忆非线性变换法实现了机载相控阵雷达常规脉冲情况下瑞利分布、对数正态分布和韦布尔分布地面杂波的模拟；④提出了采用在视频上对目标回波的多普勒频率进行模拟的方法。

According to the background of society, economy, urbanization of domestic cities and towns, and basing on the systemic theory , this research has establish an appraisable model of demand and supply level of cities'environment condition. Then set Dongguan city and its towns of Guangdong province for example, concretely analysis the environment condition level, and the problems are faced with.

本研究是以国内城镇社会经济发展及城市化进程为背景，以城镇系统理论为基础，首先利用层次分析法建立了一套适用于评价国内城市、城镇环境卫生需求和供给水平的数学模型，然后以广东省东莞市为实例，进行模型计算，评价东莞市环境卫生现状水平，有针对性的提出问题所在。

The response surface methodology was used to optimize hydrolysed conditions of fruiting body in Armillaria luteo-virens Sacc including the central combined design, response surface analysis, evaluation of model and certification of the analysis from response surface plot.

酶解条件的优化采用中心组合响应面分析法：建立数学模型回归分析，模型评价，最后进行验证实验。

The dynamic models of the sonar array are predigested logically, the concise and banausic models are given.

对猎雷声纳基阵的动力学模型进行简化研究，给出了简化后简洁、实用的数学模型。

This article rests on the BANT network-based planning techniques the research results, elaborated from the network curve model and the mathematical model and the network system function three aspects the network hierarchical structure theory and with the structure-symbol circuit analysis inner link, pointed out it is the basic theory which the project management software develops; Based on the BANT-BCWP1.0 software, is recognized from two aspects of the project management software development platform and the network ccommodating identification and is introduced the network hierarchical structure theory in the BANT project management software development practice.

本文依据BANT网络计划技术的研究成果，从网络曲线模型和数学模型及网络系统功能三个方面阐述了网络层次结构理论及其与结构符号网络理论的内在联系，指出它是项目管理软件开发的基础理论；依据BANT BCWP1.0软件，从项目管理软件的开发平台和网络相容辨识两个方面介绍了网络层次结构理论在BANT项目管理软件开发实践中的应用。

This article rests on the BANT network-based planning techniques the research results, elaborated from the network curve model and the mathematical model and the network system function three aspects the network hierarchical structure theory and with the structure-symbol circuit analysis inner link, pointed out it is the basic theory which the project management software develops; Based on the BANT-BCWP1.0 software, is recognized from two aspects of the project management software development platform and the network ccommodating identification and is introduced the network hierarchical structure theory in the BANT project management software development practice.

贵州省电子计算机软件开发中心，贵阳 550002）本文依据BANT网络计划技术的研究成果，从网络曲线模型和数学模型及网络系统功能三个方面阐述了网络层次结构理论及其与结构符号网络理论的内在联系，指出它是项目管理软件开发的基础理论；依据BANT BCWP1.0软件，从项目管理软件的开发平台和网络相容辨识两个方面介绍了网络层次结构理论在BANT项目管理软件开发实践中的应用。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷