模型

Finally, PNV had been mapped according to Boolean discrete methods to connect climate submodel and vegetation submodel by GIS. PNV map first represented the spatial distribution of all vegetation types of 4 physiognomic levels in Taiwan, also integrated the diverse comments of altitudinal vegetation zones and geographical climatic regions in the past. Besides, the scattered ranges of 36 dominant trees in the moisture-thermal regime and climatic zone had been drawn via coordinating 585 plot-data with MWI and WDI.

为达绘制潜在植群图之最终目标，本研究以MWI及WDI之网格图层代表气候亚模型，以潜在植群形相分类方案之各阶类型代表植群亚模型，藉由布林分离法联系此2亚模型之关系，建构气候–植群分类模型，并以地理资讯系统绘制出包含群系纲、群系亚纲、群系组、群系之潜在植群图，首次完整呈现台湾各阶植群类型之空间分布，合理说明了山地植群带分化、北部植群下降及西南部冬季乾旱等现象，亦整合过去各种有关垂直性山地植群带状分化与水平性地理气候区划分的复杂意见；另外，本研究将585个样区林木座标标定於MWI及WDI，绘制36种林木於水热境制及热量气候带之分布范围。

A chemical reaction mechanism model has been established to simulate the combustion process in the cylinder of dual fuel engine. The pilot fuel model has been given to calculate the distribution of the liquid fuel and time of fuel pre-combustion, at the same time, analyzing the important action to the combustion of the natural gas in the combustion chamber of engine, determining the best quantity of pilot fuel.

理论方面，提出了基于化学反应的燃烧模型—多组分气相反应系统的化学反应动力学模型，以此进行双燃料发动机的热力学—化学反应动力计算；引燃油燃烧模型，计算引燃油液滴的分布规律和滞燃期，验证引燃油在双燃料发动机燃烧过程中的作用，揭示不同喷油规律对双燃料发动机的影响，确定在不同负荷下的合理引燃油量；爆震模型，揭示爆震与工质能量释放间的关系和影响爆震的各种运转因素，确定合理的爆震依据，减小爆震倾向。

By the technics parameters model relied on the influence of actual parameters, the platform realizes the imitation of Pilule production process, and can validate, improve the models so as to get the factors influencing pilule quality according to the data produced by the real product and the platform.

该平台根据实际生产工艺参数之间的影响关联关系所建立的工艺参数模型，实现了滴丸滴制过程的仿真，还可以根据实际生产中采集的数据和按照模型虚拟实验产生的数据，验证模型和完善、修改模型，进一步得出影响滴丸质量的各个数据指标。

The R/C frame structures were modeled with bar system and the column was modeled with multi-springs. The concrete and steel bars in column were considered as springs in order to reflect the coupling influence between the axial force and the moment-rotation relationship, the hysteresis of springs is based on the material properties and the rotation of column section is followed the plane assumption. The moment-rotation of beam section was modeled with trilinear hysteresis model.

混凝土框架分析模型采用杆系模型，其中柱采用多弹簧模型，柱端的混凝土和钢筋作为弹簧考虑以便反映柱轴力与弯矩－曲率的耦合关系，弹簧的滞回关系根据材料特性确定，柱截面的转动符合平截面假定，梁截面弯矩－转角关系采用三折线滞回关系模型。

To fully utilize the advantages of 3S technologies, crop growth simulation model and crop management knowledge model, and to grope info the integration method and application mode of key technologies in precise farming adapted to Chinese circumstance, a model and 3S-bascd digital wheat farming system was developed based on plentitude combination of wheat growth simulation model, wheat management knowledge model and 3S technologies.

为了充分发挥和利用3S技术、生长模型和管理知识模型的优势，探索适合中国国情的精准农业关键技术集成方法及应用模式，以软件开发方法论为指导，充分结合小麦生长模型、管理知识模型和3S技术，应用ASP。

The conventional calculation models of electron displacement polarizability are summarized and their limitations are revealed.

分析了经典的电子位移极化率的计算模型，指出了这些经典模型在计算非对称双原子分子模型时存在局限性，提出了一种针对非对称双原子分子的电子位移极化率的计算模型。

The unload-reloading curves of the hysteretic models also based on a three stage polygonal line and a two stage polygonal line.

恢复力模型的骨架曲线均为带软化阶段的三线性折线模型，卸载—再加载曲线分别采用三折线模型和双折线模型。

The hysteretic models consisted of a skeleton curves which based on the concept of three stage polygonal line with soften region and some hysteretic rules.

恢复力模型的骨架曲线均为带软化阶段的三线性折线模型，卸载—再加载曲线分别采用三折线模型和双折线模型。

The study establishes the compression of models and algorithms for vector graphics data on different basis, including on the basis of vector graphic factors of B spline curves in predecessors research; on the basis of rectangle graphic factors in main axis mode; on the basis of the application of Hough transform to polygonal line, ellipse and circle, so the study improves the models and algorithms of compression for vector graphic data.The compression for vector graphic data mainly studies the data of storing graphic factors.

本文研究的内容是：根据对以往各种曲线矢量数据压缩模型与算法的研究，建立了基于B样条的曲线矢量图形要素的数据压缩模型和算法；在前人研究的基础上，建立基于主轴模式的矩形图形要素的数据压缩模型和算法；本文作者将Hough变换应用到折线、圆及椭圆图形要素的矢量数据压缩上，在此基础上改进了基于Hough变换的折线、圆及椭圆图形要素的数据压缩模型和算法。

The results show that the modified GM (1, 1) has the most satisfactory accuracy, while power function model and exponent function model are moderate in accuracy and hyperbolic model is relatively worse than the aforementioned ones.

结果表明，修正的GM(1， 1)模型模拟的荷载－位移曲线精度最高，幂函数模型和指数函数模型次之，双曲线模型相对较差。

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。