聚集运算是传感器网络查询处理中最重要的一个运算。
Aggregation is one of the most important operations in query processing for sensor networks.
在无线传感器网络环境中，用户经常提交空间范围查询以获取网络某局部区域的统计信息，如最大温度、平均湿度等。
In wireless sensor networks, the users often submit spatial window queries to obtain the summary information of a local area in the network such as maximum temperature, average humidity, et al.
提出一种无线传感器网络嵌入式网关的设计方案和无线传感器网络数据管理与查询模式。
An embedded gateway of wireless sensor network was designed, and a management and query mode was proposed.
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