通过将分布式计算资源组合到单一的系统“图像”中，网格计算生成了可以使用户访问所需数据和资源的虚拟机算计。
By combining distributed computing resources into a single system "image," grid computing creates a virtual computer from which users can access data and resources as required.
空间数据管理网格将物理分布的空间数据在逻辑上组成一个超大虚拟的空间数据库，实现全国乃至全球的海量空间数据的管理。
Spatial data managing grid can integrate all distributed data into a super-large, virtual spatial DB, it can realize to manage magnanimity spatial data of the whole country or global.
网格服务可以支持分布数据、动态资源发现、访问透明性、动态负载平衡等虚拟服务。
One of these is the grid which supports many virtual services, such as federated access to distributed data, dynamic discovery of data sources, etc.
为了充分利用已有的数据资源，我们借鉴网格中的数据管理技术，提出使用元数据目录与访问代理相结合来管理分布式虚拟环境中数据的方法。
To make full use of the data resource, a hierarchy architecture of massive data management system based on Grid is proposed, which consists of Metadata Catalog and Access Broker.
为了充分利用已有的数据资源，我们借鉴网格中的数据管理技术，提出使用元数据目录与访问代理相结合来管理分布式虚拟环境中数据的方法。
To make full use of the data resource, a hierarchy architecture of massive data management system based on Grid is proposed, which consists of Metadata Catalog and Access Broker.
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