作模型用的

This article detailedly expatiated upon the principles, contents and methods of cropland classification; it analyzed the necessity to combine the work of cropland classification with GIS technology, summarized the attributions of ARC/INFOand some other related softwares; it established the technologic route of cropland classification supported by GIS, by a case study in Liwu Town,Li County Hebei Province, this article expatiated the practicable mechanism of combining the function of ARC/INFO with the work of cropland classification, and put forward some new ideas and approaches of utilizing GIS: this paper put forward the idea of coding the polygons in the basic graphic database such as soil map and land use map according to their attributes, and put forward the detailed coding project; based on the code databases, it expatiated upon the detailed approaches to create single梖actor map and output the final classification map; it put forward the principles and the method of creating classification units in the environment of GIS, that is how to keep the lines of soil polygon, the border of districts and the important objects such as residential areas, banks of rivers and roads ,and how to overlap single梖actor soil map and land use map, and to delete some vector lines of the overlapped map appropriately; it detailed the methods of creating mathematic model of classification coefficients in the environment of computer, and used FOXPRO6.0 programs to realize the automation of calculating coefficients; it represented the method of plotting the final map by overlapping various coverages according to the code tables and lookup tables, the process of outputting the cropland classifying map was finished by program.

本文法对耕地等别划分的原则、内容及方法作了较详细的阐述，介绍了多系数综合修正法的耕地等别计算方法及其具体应用和AHP的确权方法；分析了耕地等别划分工作与地理信息系统技术相结合的必要性，简要介绍了地理信息系统软件ARC／INFO及其他相关软件的功能特点，制定了地理信息系统支持下耕地等别划分的技术路线，通过对河北省蠡县蠡吾镇的实证研究，重点阐述了ARC／INFO及相关数据库软件与耕地等别划分结合的有效机制及GIS应用的一些新思想、新方法：提山了对土壤图和土地利用现状图等基础图形数据库进行特征编码的思想和具体的编码方案，阐述了基于与图形库相链接的特征编码表，单因素图提取、成果图的输出的具体实现方法；提出了GIS环境下耕地单元划分的原则和方法，即在保留土壤因素图斑界线、行政界线和重要地物等的原则下，将土壤单因素图和土地利用现状图进行拓扑叠加，对叠加图中的矢量线进行适当的删除；阐述了在计算机环境下，耕地分等参数计算模型建立的方法，并用FOXPRO6.0语言程序实现了参数计算的自动化；阐述了根据图形库特征编码表和建立绘图符号查找表，按不同图层叠加绘制成果图的方法，该过程用命令程序实现耕地等别图的输出。

Although this structure is comparatively complex, it still can be divided into sub-strctures to study. This paper puts forward for the first time the loop geometric model of MBWK fabric reinforced composite. And based on this research, the total structural model for the MBWK fabric reinforced composite was also derived subsequently. In addition, the Non-Uniform Rational B-Spline Curve NURBS for abbriv.

我们经过合理分解复合材料的内部结构，对实际结构作了必要的简化之后，得到了可以进行几何和力学分析的结构单元，也就是说，线圈结构可以用数学方法描述，所以本论文第一次提出了MBWK织物增强复合材料线圈结构的几何模型并分析了这种复合材料整体的结构形态特点。

It can be shown that the base function for the optimal analysis of PSV data is HSV eigen-function deduced from the proper or thogonal decomposition of the geomagnetic model data instead of the lower degree spherical harmonic function in common use.

统计学意义上最优的分析方法不是直接对PSV数据作低阶轴对称球谐分析，而是通过对地磁场模型数据的特征正交分析，得到表征HSV的特征函数，再用它们去分析PSV形式的数据。

The main content of this thesis is as follows: 1The structures of EPS are analyzed. The main components of EPS are introduced in detail. Then the distributed torque in EPS is analyzed and the control system model is set up. 2Three control modes are discussed and the control strategy of EPS is studied in detail. Three principal modules in the control strategy are discussed—the predicted module which predicts motor rotational speed and steering rotational speed, the power-assistant module and the return control module. 3The assistant torque curves of the motor are designed by using the B-spline, so that any kind of custom-built assistant torque curves can be designed according to different kinds of automobiles. 4The hardware frame of EPS is studied. The developed controller based on 8-bit MCU MC68HC908MR8 is introduced and many related circuit units are designed, including the control circuit, the driver control circuit and so on. The software structure is discussed, then the steering control program flowchart is given.

本文的主要工作有： 1分析了EPS 的总体构成，对EPS 的各个部件作了详细的介绍，并在此基础上分析了EPS 的受力情况，建立了控制系统模型，并研究了EPS 的安全性能； 2讨论了EPS 的三种控制方式，提出了控制策略，并讨论了其中三个关键模块的作用：预估模块包括对电机转速和方向盘角速度的预估，助力控制模块以及回正模块； 3用B 样条插值方法进行EPS 助力曲线的设计，可按照用户的要求设计任意形状的助力曲线，以满足不同车型和不同用户的要求； 4研究了控制系统的硬件结构，以MC68HC908MR8 为核心设计了控制器，详细讨论了控制器的控制电路、驱动电路等；设计了控制系统的软件，给出了控制程序流程图，并对要点进行了详细的说明。

Because the region of laser-vapour interaction is on the symmetric axis, the author conducted thoroughgoing studies in metal evaporation in vacuum by one-dimensional model.

考虑到实际过程中，激光作用区处于蒸发装置的对称轴线上，本文用一维球面蒸发模型对真空金属蒸发作了深入的研究。

As a nondestructive technique to measure the inner fine structure of the cathode, the ICT has the unique advantage. We discussed the emission mechanism of thermionic cathode, and tried to explain the excellent performance of mixed metal cathode by Richardson formula and Muller's computational model.

就当前钡钨阴极发射机理的两个主要理论模型作了自己的探讨，并初探了钡钨阴极中钡的供应机制及发射寿命预测的问题，而且用理查逊公式的推导和Muller计算机模拟法解释了混合基钡钨阴极的优良性能。

Evans typy Ⅰ intertrochanteric fracture were produced and fixed with A-P Gamma nial. In the standing position, press test were carried out on MST tested instrument for to compare the biomechanical property of A-P Gamma nail with the control.

将新鲜尸股骨制成EvansⅠ型粗隆间骨折模型，用A-P型Gamma钉进行安装固定，与不作任何处理的对照组分别在MTS实验机进行抗压和抗扭转实验，比较两者的生物力学性能。

AIM: To inverstigate the effects of exogenous Znmetallothionein on antioxidative function and gene expression of SOD in weaning piglets. METHODS: Eighteen piglets (Duroc×Landrace×Yorkshire) were selected and divided into 3 groups (1, 2 and 3) randomly.

目的：用仔猪作模型，研究经锌元素诱导的外源性金属硫蛋白对机体抗氧化功能和超氧化物歧化酶基因表达的影响。

Referencing to the internal and external documents, we have plotted the balanced evolutions for the various typical structures by computer, which is the first time at home; applied the balancing technique by computer to the representative structures in Sichuan Oil and Gas Basin, and also established the geological modellings on three different structural elements and their own balanced evocutions in Sichuan Basin.

借鉴国内外的资料，在国内首次用计算机绘制出各种典型构造的平衡演化剖面，并应用机制平衡技术对四川油气盆地内的代表构造作了详细的平衡计算，建立起四川盆地内三个不同构造单元的地质模型以及构造平衡演化剖面。

As a nondestructive technique to measure the inner fine structure of the cathode, the ICT has the uniqueadvantage.We discussed the emission mechanism of thermionic cathode, and tried to explain the excellent performance of mixed metal cathode by Richardson formula and Mullers computational model.

4就当前钡钨阴极发射机理的两个主要理论模型作了自己的探讨，并初探了钡钨阴极中钡的供应机制及发射寿命预测的问题，而且用理查逊公式的推导和Muller计算机模拟法解释了混合基钡钨阴极的优良性能。

Objective: To study the effect of polycythemia on blood oxygen saturation.

裴蕾目的：观察RBC剧增而引起的高粘血症对血氧饱和度的影响。

Based on SIMPLER algorithm in the curvilinear body-fitted coordinates, the calculations were performed for Pr=0.7, Re=10~1000 on non-orthogonal non-staggered grids which are generated by elliptic equation systems.

采用曲线坐标系下压力与速度耦合的SIMPLER算法，数值研究了周期性渐扩渐缩波纹通道内脉动流动与换热情况，流动Re数的范围为10~1000，Pr数为0.7。