查询词典 data base key

Then it describes the properties of topological transformation in map data processing as well as the realization of so-called indirect topological selection in this cartographical data base system.

然后就地图数据处理的拓扑变换性质以及在该地图数据库系统中称之为&间接拓扑选取&的实现进行了论述。

The proposed discardable data adaptation method uses data partitioning and slice group with error resilient capability,to separate base layer picture into discardable and non-discardable types.

本文提出的方法是在编码端使用具有容错能力的数据分割和条带组编码技术，将SVC码流的基本层数据分为可丢和不可丢两种类型。

At the same time, a mass of data during the traditional process of excavator design is stored dividually in different data base, which directly affects the efficiency of excavator design and the implementation of subsequent excavator CAE system.

另一方面，由于挖掘机CAD系统中的大量数据和信息都分散存储在不同系统数据库中，大大影响了设计进程和后续的挖掘机CAE系统的进行。

The non-physical simulation mode on the base of the human body simulation based on the sports instantial data can get an excellent simulation results, and fit into the demands of the immersion, stability and real time of the system.2 Simulation of the secondary objects based on the collision detection and the application of sports instantial data.

非物理方式的一个问题在于无法反馈受力给人体，但由于我们采用的人体实例数据为捕获的真实数据，无论是否反馈都不能改变人体的运动，'所以即使使用物理方式计算出对人体的反馈力，也是不必要的。

Secondly, interpret the water-bearing status of drainage-base substance fromTM,according to the water-bearing spectral features,using GIS and RS technologies,based on thesurveying hydrologic data,and build up the projectional mathematical model of the Karstdrainage low-flow resource, in order to solve the calculation of the amount of low-flow resourcesin no documents and data regions.

二是以实测的水文数据为基础，利用 GIS 和 RS 技术，根据赋水光谱特征，从 TM 影像判读枯季流域下垫面物质赋水状况，建立喀斯特流域枯水资源预测的数学模型，用于解决无资料、无数据地区枯水资源量的计算。

Methods 10 specimen of adult cadaver heads were collected and the following data was measured under microscope: the distance between the pterion and seller region, and that between the pterion and anatomical landmarks of the middle cranial base as well as the angle between them, which provided data basis for choice of various surgical instruments.

方法在显微镜下对10例成人尸头，测量其颞部锁孔下翼点至鞍区和中颅窝底解剖标志的距离和角度，为手术器械的选择提供依据，并对鞍区和中颅窝底不同解剖间隙进行观察。

Our effort is on the base of TOSHIBA 1MR—15 linear accelerator and PH- ILIPS OSS radiotherapeutic plan system,put the data of American Varian therapy device into O SS system,then merge the data of LMR—15 and Varian two kind of therapy devices into a DIF document,put it into OSS system,so reach the function that OSS system surports two kind of therapy devices at the same time.

本工作是在东芝LMR—15直线加速器和菲利浦公司的OSS放射治疗计划系统的基础上，将美国Varian治疗机数据装入OSS系统，进而将LMR—15和Varian两种治疗机的数据合并为一个DIF文件，装入到OSS系统中，实现了OSS系统同时支持两种治疗机的功能。

The results showed that:(1) some governing points, which were measured by submeter precision GPS, were utilized to correct the 1 m precision remote sensing image and it could satisfy the desired precision of geometrical correction, therefore, this method could be used as geometrical correction in the region where was short of the big scale relief map;(2) the density of the original data was the main factor to affect precision of the volume, and the precision of the calculated volume of earthwork could be improved to more than 90% when using the test points and feature points; the sparser the data density were, more significant could be improved; On the base that elevation of test points were measured by the submeter precision GPS, the error of the volume, which was produced by vectoring relief map to obtain DEM, could be calculated, and the calculation precision of the earthwork could be improved markedly.

结果表明：利用平面精度达亚米级的GPS测量控制点坐标对1米分辨率的遥感卫星影像进行几何校正，能够满足其几何校正的精度要求，可以解决缺乏大比例尺地形图地区的高分辨率遥感卫星影像的几何校正问题；通过对模型数据的分析，数据密度是影响体积精度的主要因素，利用检测点高程和特征点可以提高土方量计算的精度，使土方量计算的精度达到90％以上，数据密度越稀疏，精度提高越显著；采用高程精度达厘米级的RTK(Real Time Kinematic实时动态差分)测量检测点的高程，对用地形图扫描矢量化形成的DEM模型进行检测求出误差体积，可以大大提高土方量的计算精度。

Considering the difference of the use of clustering algorithms caused by the diffference of data distribution, on the base of the analysis of Kmeans algorithm, fuzzy Cmeans algorithm and genetic algorithm, a new algorithm was brought forward based on the genetic algorithm and the improved neighbor function criterion. In view of the intrinsic connection of the special and the advantage of genetic algorithms wholesearch strategy, to a certian extent, this new algorithm solve the problem about the uncompact and irregular data distribution.

考虑到空间数据分布特性差异造成聚类算法采用的不同，在比较分析K均值算法、模糊均值算法和遗传算法的基础上，提出了改进的近邻函数准则，并有机整合形成遗传算法与改进近邻函数准则的新算法，综合了遗传算法的全局性概率搜索的优点，并考虑到空间数据内在的连接方式，在一定程度上较好地解决了数据的非致密非规则分布问题。

On the base of reviewing the development of NSP models, some deficiencies of existent models are analysed and listed as follows: most models can be applied only to very small watershed; mechanism models involve too many parameters which can not be calibrated properly by limited data; amoung practical models, empirical models are much more common than mechanism models; most models are focus on the conservative soluble pollutants rather than non-conservative and particulate pollutants; almost all models rely highly on the measured data, and there are fewer studies about the load estimation for ungauged areas.

本文在评述非点源污染模型研究进展的基础上，分析了现有模型的不足，主要有：大多数模型只能适应于很小的流域面积；机理类模型参数过多，率定困难，应用效果不理想；实用模型中，经验类模型多，机理类模型少；对保守性的液态污染物研究得较多，对非保守性和固态污染物研究得较少；各类模型均高度依赖于实测资料，无资料地区的模型或预测方法研究得很少。

We were cousins—his grandfather was King of Scots,and his great-grandfather was Henry VII of England.

我们是堂姐弟——他的祖父曾是苏格兰国王，他的曾祖父是英格兰的亨利二世。

I do want to help you, but I am in a quandary now!

我是想帮你，但是我现在左右为难啊！