查询词典 map of the world

Traditionally, to provide Web Map Service, a program named "Map Server" must be run as a standalone process to create map images.

传统的Web地图服务必须由运行于独立进程的"地图服务器"提供。

Of its research mainly includes the preparation of maps, map projection, map finishing, map printing.

其研究内容主要包括地图编制、地图投影、地图整饰、地图印刷等。

Map projection ; inverse transformation ; map projection system ; map projection parameters ; algorithm optimization ; error control

地图投影；反解变换；投影体系；投影参数；算法优化；误差控制

This thesis focus on GPS application in magnetic suspension engineering:① the formulation of oblique cylindrical projection is worked out according to characteristics of long distance precise engineering and map projection theory. The author has developed an application to accomplish coordinate conversion from generally used coordinate systems to oblique Maglev Coordinates System.② considering not only project peculiarities but also position of control points, selection of initial points, connection type, selection of repeat baseline and ground observed quantities, GPS network is designed on electronic map and we may extract GPS network information by program developed using Visual Basic 6.0 while the results are stored in control point file and baseline vector file.③estimate accuracy of various GPS networks designed on electronic map by method of 2D restriction adjustment. GPS network simulation design and accuracy estimate come true.④Predominate the rules how connection type , repeat baseline and precise baseline of range finder influence GPS network precision through comparing accuracy of various GPS network. Thereby, the solution how to establish GPS network in long distance precise engineering is figured out.

本论文主要研究GPS技术在磁悬浮工程中的应用：①根据长距离精密工程的特点，从地图投影原理出发，推导出斜轴圆柱投影的应用公式，并编制计算软件，实现从常用坐标系统向斜轴磁悬浮坐标系统的转换计算；②在AutoCAD电子地图上，根据工程的需要，并充分考虑控制点的点位、起算点的选择、连接方式、重复基线的选择和地面观测量的选择等因素，在电子地图上进行GPS网的设计，根据Visual Basic 6.0语言编程，提取出GPS网资料，保存在控制点文件和基线向量文件中；③对在电子地图生成的各种类型的GPS网进行二维约束平差的精度估算，实现了GPS网的模拟设计与精度估算；④通过对各种控制网的精度比较，掌握连接方式、重复基线、精密测距仪基线对GPS网精度影响的规律，解决了长距离精密工程GPS网的建立方法。

Students can use this map, along with a map from prewar Europe, to draw a comparison map.

同学们可以根据这张地图和战前的欧洲地图，做出一张对比地图来。

On the basis of Earth surface space using reference ellipsoid as height basis, map space using Gauss-Kruger projection plane as height basis, a viewpoint is proposed that map projection actually establishes corresponding relationship between the height bases of two different spaces above. From the viewpoint of projection and visible representation, the relationships among earth surface space, RS imagery space and map space are analyzed; the differences among different representations of earth surface space are identified theoretically; virtual reality is applied to the representation of land surface space, and a prototype of real 3D virtual reality system based on spatial information is developed. By means of digital simulation, virtual reality representation of land surface space in visual image space is realized.

在以参考椭球面为高程基准面表征地表空间、以高斯-克吕格地图平面为高程基准面表征地图空间的思想基础上，提出了地图投影实质上是建立两个空间的高程基准面之间关系的观点；从投影和可视表达的角度，分析了地表空间、遥感图像空间、地图空间之间的关系，从理论上区分了对地表空间的不同表达方式之间存在的差别；将虚拟现实技术应用于地表空间的表达，研制了空间信息三维虚拟现实系统原型，利用数字模拟技术在视像空间实现了对地表空间的真三维虚拟现实表达。

Map is a powerful tool for recording,displaying,computing and analysing roomage relationship of geographic objects. With the development of Science of Computer and Mapping technology, traditonal paper map will be replaced by digital map for its preponderant attribute of dynamical, alternative, Super-Media intergrated, Multi-Yardstick expression and Multi-Dimension displays.

地图是记录、显示、计算、分析地理事物空间关系的一个重要工具，数字地图则具有动态性、交互性、超媒体集成、多尺度表达、多维化显示等优越特性，计算机科学与测绘技术的发展，使得传统纸质地图逐渐被数字地图取代。

Optimization; parametric quadratic convex programming; set-valued map; directional derivative; linear stability; solution-set map; parametric linear programming; error bound; subdifferential map; lower locally directionally Lipschitzian; upper locally di-rectionally Lipschitzian; locally directionally Lipschitzian; convex function; quasidiferential; kernelled quasidiferential; quasi-kernel; star-kernel; star-diferential; Penot diferential; subderivative; superderivative; epiderivative; set-valued optimization; set-valued analysis; subdifferential; optimization condition;ε-dual; scalization; generalized subconvexlike-cone;ε-Lagrange multiplier

基础科学，数学，运筹学最优化；集值映射；方向导数；线性稳定；最优解集映射；参数线性规划；参数凸二次规划；误差界；次微分映射；下局部方向Lipschitzian；上局部方向Lipschitzian；局部方向Lipschitzian；凸函数；拟微分；核拟微分；拟核；星核；星微分； Penot-微分；上导数；下导数； Epi-导数；集值优化；集值分析；集值映射的次微分；最优性条件；广义锥次类凸；ε-对偶；数乘；ε-Lagrange乘子

It is safe and effective for whole blood stored in ACD and red cell suspension in MAP medium, But the contents of Rc-MAP differ from WB- ACD, Rc-MAP is worthwhile for the patients of hemorrhage and Anemia, and it ha s high development Value.

全血保存在ACD或红细胞混悬于MAP保存液中是安全与可行的，红细胞MAP的内容物与ACD全血不同，红细胞MAP在失血和贫血病人中的应用值得关注并应予推广。

It was found that the asymmetric induction level of H〓-MAP was exclusively higher than that of corresponding MAP. Under the optimized reaction conditions, the allylation product could be obtained in up to 90.9% ee with H〓-MAP having 3, 5-xylyls as chiral inducer.

发现H〓-MAPs比MAPs类配体取得了更好的不对称诱导效果，在优化的反应条件下，可以得到90.9％ee值的产物，大大高于文献中报道的MAPs配体的最好结果（73％ee）。

Green function defined inphase space differs from one in coordinate space by its struc-ture which exhibits nonlocatity in coordinates and oscillatorybehavior with respect to momenta.

在相空间中定义的Green函数不同于通常坐标空间的Green函数，在结构上显示出对坐标的高度非局域性，而对动量则显示出振荡行为。

The upper front part of a saddle;a saddlebow.

前鞍桥马鞍前面的上部分；前鞍桥