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地球数据
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  earth data
     THE SPACE MATHEMATICAL BASE FOR LARGE GIS AND EARTH DATA
     大型GIS与地球数据产品的空间数学基础
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     XML WEB SERVICE AND IT'S APPLICATION IN EARTH DATA SHARE
     XML Web Service及其在地球数据共享中的应用研究
短句来源
     The researches in earth sciences generats extremely huge data named as Earth Data that has been required to be shared in Internet.
     地球科学研究产生了大量的地球数据,其特点决定了地球数据共享的必要性。
短句来源
     Finally, with an testing case to show that XML Web Service is an ideal choice to realize the global Earth Data share.
     NET中对XMLWebService在地球数据共享的应用进行了测试,指出XMLWebService是未来实现全球级的地球数据共享应用的理想选择。
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  “地球数据”译为未确定词的双语例句
     In the process of research, I have referenced great deal of newest information about Grid, Grid computing, and Data Grid and I have ever tried to erect a little test bed of Grid.
     本文在研究过程中参阅大量网格、网格计算、数据网格等方面的最新资料,并尝试建立小型网格试验床,以期构建地球数据网格原型。
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     As a kind of important technology used to collect geo-science data and the changing information of the Earth, Remote Sensing has been widely used in many countries and their various institutions.
     作为一种采集地球数据及其变化信息的重要技术手段,遥感在许多国家的政府部门、科研单位和公司得到了广泛的应用。
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     Remote sensing, as an important means collecting global data and the information of its changes, is widely applied in many administrative departments, scientific research units and companies in the world.
     遥感作为采集地球数据及其变化信息的重要技术手段,在世界范围内的许多政府部门、科研单位和公司得到了广泛的应用。
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  相似匹配句对
     DATA & INFORMATION
     数据
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     DATA
     数据
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     The foun- dation and the key of digital Earth is data.
     数字地球的基础和关键是数据
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     Earth's gravity field derived from GRACE satellite tracking data
     用GRACE卫星跟踪数据反演地球重力场
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     Degasification of the earth
     地球去气作用
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  earth data
From the mathematical analysis of the rare-earth data on some of the Apollo 12 samples studied by Hubbard et al.
      
Rare Earth data and petrogenesis of andesite from the North Chilean Andes
      
The demonstrated mobility of Sr and LREE suggest that Sr isotopic and rare earth data obtained from the eastern Iceland lavas must be interpreted with caution.
      
At the two ends of the earth data access challenge are the archives and the public.
      
By comparing the bare earth data to the SAR data, we can see that there is little variance in these two data sets.
      
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Construction of digital earth has become hotspot for many governments and experts. Many countries invest to construct the data foundation of Digital Earthdigital geographic information. This paper mainly introduces the development of digital map and some problems in some countries in Asia-Pacific Areas.

“数字地球”的建设成为各国政府和专家关注的热点 ,纷纷投资建设本国数字地球的数据基础数字化地理信息 ,本文主要介绍亚太地区主要国家在数字地图方面的进展状况及其存在的问题。

The map projection is a kind of topology transformation between two_dimensional fields in order to express the earth surface with limited plane maps.When choosing a concrete type of map projection,we usually consider three factors: map use,map scale,and location,shape,area of the region.Map projections are the space mathematical base of maps.GIS came of cartology,and maps are the main data source of GIS.Currently,most GISs take map projections as space mathematical base.Various GISs adopt respective reference...

The map projection is a kind of topology transformation between two_dimensional fields in order to express the earth surface with limited plane maps.When choosing a concrete type of map projection,we usually consider three factors: map use,map scale,and location,shape,area of the region.Map projections are the space mathematical base of maps.GIS came of cartology,and maps are the main data source of GIS.Currently,most GISs take map projections as space mathematical base.Various GISs adopt respective reference systems and map projections adapting to the region and the scale,and all GISs corresponding to the state basic scales take Gauss projection as mathematical base in China.However,lots of practice has proved that large_scale GIS which take Gauss projection as space mathematical base have a lot of problems,e.g.large region can not be continuously visualized.Since spatial objects are digitized in respective maps which are discontinuous,complex map merging is necessary but hard to handle.Gauss projection is not applicable for integrating maps at different scales over a large rang.The systems are limited to expand and update with development.It is difficult to define the third dimension and the time dimension in such complex two dimension measurement space.The fact that GISs use different reference systems is a main disadvantage for both GIS's development and the form of the Digital Earth. The mathematical base of GIS is essential to unify the GIS established separately.It is also the premise for building the Digital Earth.After analyzing the status quo and the limitations of the space mathematical base of GIS,this paper points out definitely that the geodetic coordinate system is uniform,which can show the location of any point of the global exactly and uniquely in form of ( B,L,H ) and is the most proper reference system of large_scale GIS and Digital Earth.Moreover,this paper also puts forward a set of practical model of the standard “map projection",that is, R multiplied L is X ,and the product of R and B is Y ,where L is the longitude, B is the latitude,and their units are radian. R is the mean curvature radius of the earth. The model is similar in form to the cylindrical equidistant projection,but they differ from each other in essence.The first one is the plane view of the geodetic coordinate system's horizontal projection,and it provides the exact 2D geometry measurement space on the global earth surface.The view system and the measurement space are separate in the model,but the latter is the plane view and the plane measurement system. Finally,this paper introduces a DRG system based on this model.

将地图投影概念由传统的曲面到平面的变换扩展为曲面到曲面的变换 ,并提出一套适合于大型GIS和地球数字产品的实用“地图投影”模型。该模型的视图采用等距离切圆柱投影 ,度量空间是椭球面几何系统 ,符合计算机环境下GIS视图与度量空间分离的特性。鉴于全球多分辨率连续可视化 ,精密可视化量算、三维、多维地球数据统一 ,标准的空间定位框架和只有在统一的空间系统内 ,全球资源、生态环境数据才能进行精确的地理分析等 4个方面的需要 ,从地图投影发展到本模型将是方向和技术趋势

Large-scale GIS and the Earth spatial data products are confronted with the problem how to define their space mathematical base in theory and practice, which is also the basic problem of the development of the whole Geographic Information Science. Now, many international academic institutes and famous scholars show much interest in it. The map projection is a kind of topology transformation between two-dimensional fields in order to express the earth surface with limited plane maps. When choosing a concrete...

Large-scale GIS and the Earth spatial data products are confronted with the problem how to define their space mathematical base in theory and practice, which is also the basic problem of the development of the whole Geographic Information Science. Now, many international academic institutes and famous scholars show much interest in it. The map projection is a kind of topology transformation between two-dimensional fields in order to express the earth surface with limited plane maps. When choosing a concrete type of map projection, we usually consider three factors: map use, map scale, and location?shape?area of the region. Map projections are the space mathematical base of maps. GIS came of cartology, and maps are the main data source of GIS. Currently, most GIS take map projections as space mathematical base. Various GIS adopt respective reference systems and map projections adapting to the region and the scale, and all GIS corresponding to the state basic scales take Gauss projection as mathematical base in China. However, lots of practice have proved that large-scale GIS which take Gauss projection as space mathematical base have a lot of problems, e.g. large region can not be continuously visualized; Since spatial objects are digitized in respective maps which are discontinuous, complex map merging is necessary and is hard to handle. Gauss projection is not applicable for integrating maps at different scales over a large rang; the systems are limited to expand and update with development; It is difficult to define the third dimension and the time dimension in such complex two dimension measurement space; the fact that GISs use different reference systems is main disadvantage for both GIS's development and the form of the Digital Earth. The mathematical base of GIS is essential to unify the GIS established separately. It is also the premise for building the Digital Earth. After analyzing the status quo and the limitations of the space mathematical base of GIS, this paper points out definitely that the geodetic coordinate system is uniform, it can show the location of any point of the global exactly and uniquely in form of (B,L,H), it is the most proper reference system of large-scale GIS and Digital Earth. Moreover, this paper also puts forward a set of practical model of the standard map projection, that is, R multiplied L is X, and the product of R and B is Y, where L is the longitude, B is the latitude, and their units are radian. R is the mean curvature radius of the earth. The model is similar in form to the cylindrical equidistant projection, but they differ from each other in essence. The first one is the plane view of the geodetic coordinate system's horizontal projection, and it provides the exact 2D geometry measurement space on the global earth surface. The view system and the measurement space are separate in the model, but the latter is the plane view and the plane measurement system. Finally, this paper introduces a DRG system based on this model.

在分析当前地球数字产品空间数学基础局限性的基础上 ,将地图投影概念由传统的曲面到平面的变换扩展为曲面到曲面的变换 ,提出一套适合于大型 GIS和地球数字产品的“地图投影”模型的实用模型 ,该模型的视图采用等距离切圆柱投影 ,度量空间是椭球面几何系统 ,符合计算机环境下 GIS视图与度量空间分离的特性。鉴于全球多分辨率连续可视化 ,精密可视化量算 ,三维、多维地球数据统一 ,标准的空间定位框架和只有在统一的空间系统内全球资源、生态环境数据才能进行精确的地理分析等四个方面的需要 ,从地图投影进到本模型将是方向和技术趋势。

 
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