In the study of GIS, there are three models: Monitor and Discover Service (MDS), the Relational Grid Monitoring Architecture (R-GMA) and RGIS.

在对网格信息服务的研究中涌现出了很多模型，本文主要介绍了三个模型：MDS、RGIS和R - GMA。

youdao

In the study of GIS, there are three models: Monitor and Discover Service (MDS), the Relational Grid Monitoring Architecture (R-GMA) and RGIS.

在对网格信息服务的研究中涌现出了很多模型，本文主要介绍了三个模型：MDS、RGIS和R - GMA。

youdao