三维空间

The main research contents and results are as follows:(1) Based on much geological data and the Surpac software,the three-dimensional visual model of Jinchuan Deposit had been built.It would distinctly and visually demonstrate the three-dimensional relationship among the Jinchuan ore-bearing ultrabasic rockbodies,the Jinchuan main orebodies and the Jinchuan main structure.

论文的主要研究内容及成果如下：(1)在收集和综合分析大量地质资料的基础上，利用Surpac软件，建立了矿床三维可视化模型，明晰、直观地表现了矿床含矿超基性岩体、主矿体、矿区主要构造之间的三维空间关系。

The graph in isometric drawing must be consistent with the topology relations in the threedimensional model, but not be drawn in one uniform scale. Based on the result of analyzing the rules in isometric drawing, the templatebased method is proposed for representing the different and unrelated drawing rules in an uniformed way.

ISO图模型的建立：针对ISO图的自动生成时所需的工厂管道的三维模型和二维图纸模型的统一性要求，提出了一种基于点线关系模型的二三维一体化模型解决方案，把三维空间中工厂管道模型和二维图纸空间中的管道图形统一起来，为二三维模型中的各种功能提供了基础。

Virtual Plant is newly risen study field with rapid development of software and hardware of computer and advancement information technology. It is based on computer and can simulate the course of development and upgrowth of plants in three-dimension by Virtual Reality, and possess of three-dimensional and visual effect.

虚拟植物是随着计算机软、硬件技术及信息技术的进步而迅速发展起来的新兴研究领域，它是以计算机为基础，利用虚拟现实技术在计算机上模拟植物在三维空间中的结构发育及生长过程，具有三维化效果和可视化功能。

ABSTRACT: The UAV navigation system's performance is improved through embedding the geography information model that can process the vector map data in the system by using MapX, In this paper, how to navigate and plan the UAV flight course in the vector map is investigated. The basic control and operation for vector map in the geography information system is introduced, and the flight course is designed and modified in the map. In addition, 2D vector map can't orient UAV in 3D space, so the altitude model is added in the UAV navigation system to realize 3D orientation by integrating 2D vector map with altitude plot. The simulation results in the UAV simulation system indicate that the navigation system can monitor and control UAV efficiently and intuitionally.

使用MapX在无人机导航系统中添加能够处理矢量地图数据的地理信息模块，可以显著地提升系统的性能；文章对如何在矢量地图下进行无人机导航与任务规划进行了研究，完成对地理信息系统中矢量地图的基本控制和操作，并在地理信息图上进行航线的设定与修改；另外，针对二维矢量地图无法对无人机进行三维空间定位的问题，文章通过在无人机导航系统中添加高度位置显示模块，用二维平面地图与高度图相结合的方式来实现对无人机位置的三维定位；通过在无人机仿真实验系统中的使用，证明了该系统能高效、直观地对无人机飞行进行监视与控制。

Volume integral equation method has been used to calculate forward and inverse problems of 3D electromagnetic fields in homogeneous half-space.

0引言在电磁法勘探中，利用体积分方程计算三维地电磁场，由于数据点只分布在电阻率异常区域[1~3]而不是整个三维空间，因而与有限元法和有限差分法相比其计算量相对较小，是进行地电参数正反演计算的有效方法。

We could walk through a 3D space where you have all the books lined up, and you could walk right up to a book, he says.

我们能够走进一个三维空间，所有的书排列整齐，你可以直接走到书那里。

As an application of the asymptotic theory, a special wave equation is analyzed in detail.

在三维空间中，建立了一类半线性波方程在非球面对称形式下整体解的渐近理论，并给出了应用。

Research on fast algorithm of point inclusion query. From the point of view of computational geometry, winding number is extended from close curve to line segment, polygon, 2-dimensional object, plane subdivision, polyhedra, 3-dimensional object and 3D subdivision.

7，研究点查询的快速算法，从计算几何的角度将环绕系数扩展到一个除闭合曲线外的线段，多边形，二维对象，平面分割，多面体，三维对象，三维空间分割等，进而构造出各种情况下的点查询代数算法。

When I was under the microscope to see the blood cells contained in aerobic exercise, from the three-dimensional space to see the expansion of the alveoli, they want to do a medical scientist.

当我在显微镜下见到了血细胞的载氧运动，从三维空间中看到了肺泡的扩张，便又想做一名医学家。

With the three axes circumrotation method, the position of the incident laser is unchanged, and the conversion from the complicate three-dimensional spatial position relation into a two-dimensional plane is realized, by adjusting the relative positions of the detector and the target with certain spatial conversion relation.

采用三轴旋转方式，保持入射光源的位置不变，调整探测器和待测目标的相对位置，配合一定的空间转换关系，实现了将复杂的三维空间位置关系转换到二维平面进行调节。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。