查询词典 spatial

The test performance of students in cross section is significant positive correlation with spatial ability.

四、学童在「立体剖面图测验」与「空间能力量表」的表现有显著相关。

This article focuses on the line-line, line-region and region-region topological relations algorithm, which come down to the same question: whether there are intersections between line and line. The sweep-line algorithm was studied by many people, but has some deficiencies to be improved, in order to handle some special cases and increase program efficiency. My works as follows: rectangular envelope to reduce executive times , vector cross multiplication to determine intersection between line and line, coordinates and slope method to deal with some special cases. C program examples are showed together.(5) Finally, to prove capability and efficiency of the model and calculation method, some test systems are developed. For example, complex spatial topological relation query, parcels' exact area with the area of linear object reduced in land use, quality inspection to cadastral data according to topological rule, spatio-temporal change query of cadastral data.

将线线、线面、面面之间的拓扑关系实现的算法归结为线与线之间求交的基本问题；为处理一些特殊的拓扑关系情况，提高扫描线算法的效率，探讨了包络矩形粗滤、判断线线是否相交的矢量叉乘法、线节点重合或共线的斜率坐标判断法等改进方法；同时还设计了一种新的节点微小圆求交的算法，可应用于图斑与线状地物细分拓扑关系及地类面积的计算；（5）本文设计了实验系统，包括复杂对象的拓扑关系表达与计算程序、图斑地类面积的计算程序、基于空间拓扑关系规则的地籍数据库质量检查功能，以及时空拓扑关系和变化语义分析等原型，验证了拓扑关系表达模型和计算方法的可行性和实用性。

The Cholesky decomposition of cross spectral density matrix was approximated and reduced, and then the modified spectral representation method is efficient and requires less computer memory, which is suitable for simulating spatial wind fields of long span bridges.

针对现有Deodatis方法模拟大跨度桥梁空间脉动风场中存在的计算量问题，通过对谱分解矩阵引入插值近似，减少谱分解的次数，从而提高该谐波合成法的计算效率，并节省内存花费，实现了对三维空间脉动风场的有效模拟。

In the present paper,the floristic characteristics,community structure,population structure,spatial distribution and regeneration pattern of Cryptomeria fortunei were analyzed and discussed at 1 100 m on Mt.

运用系统的群落学调查方法对天目山分布于海拔1100m处的柳杉Cryptomeriafortunei群落进行调查，分析其种类组成和群落结构特征，并对柳杉的种群结构和分布格局进行了探讨。

Botany ; Cryptomeria fortunei ; population structure ; spatial distribution ; vertical structure ; regeneration ; Mount Tianmu

植物学；柳杉；种群结构；空间分布；垂直结构；更新；天目山

Graduate School of the Chinese Academy of Sciences,Beijing 100049,ChinaAn adaptive optics retinal imaging system based on liquid crystal spatial modulator was set up and a experiment on lively human eye was made.

搭建了一套基于液晶空间光调制器的人眼视网膜成像自适应光学系统，进行了活体人眼视网膜的初步实验。

The purpose of this study is to design and develop a digital game-based courseware on cubic net called Happy Cuber, and to explore the learning effect by using it on the spatial recognition abilities of fifth graders.

本研究的目的就是设计与发展正方体展开图的数位教材(取名为Happy Cuber)，并且透过本教材来探讨国小五年级学童使用教材后的学习成效。

Happy Cuber not only strengthens students' confidence in solving the problems of net and adopting more strategies but also improves their spatial abilities.

Happy Cuber不但增强了学生各个面向的空间能力，让学生在展开图解题态度上更为积极有信心，而能产生更多解题策略与想法。

Two approaches,one called CG method in this paper which based spatial cubic partitioning where the axis-aligned bounding box of the data points is partitioned by a cubical grid,and another based on tree structure such as kd tree are known for the problem.

目前主要有2种方法，一种是基于立方体分割形成的三维立方体体素索引数组的体素栅格（CG方法，另一种方法是基于树索引结构的方法如kd-Tree等。

The algorithm constructs a new matrix called spatial signature matrix in cumulant domain by application of eigen decomposition.

该算法构造了累量域空间特征矩阵，通过对空间特征矩阵的特征分解得到用户信号的空间特征估计。

I'm going tor her!

我这就去救她！

As rise are design to help keep a several toney , a brain chemical at continues lever.

SSRI被设计来帮助保持血液中的复合胺即在大脑中一个连续水平的化学物质。