Multicast routers send group Membership Query messages to learn which groups have members on each of their attached physical networks.

多路广播路由器会发送“组成员查询”消息，以了解哪些组在每个所连接到的物理网络上都有成员。

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Typical user query and analysis patterns and their performance impact on the Multi-OROLAP model and algorithms, group membership management and maintenance of multi-data warehouses are also discussed.

同时还研究了典型的用户查询和分析模式对多orolap模型及其算法、分布式数据仓库中组成员的管理和维护的影响。

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