时钟同步问题关系到各融合节点上信息的一致性，是构建分布式信息融合系统要解决的重要问题。

Time synchronization is crucial to the coherent explanation of the meaning of the data in distributed information fusion nodes.

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最后，论文实现了基于日志的联邦原型系统，关键技术包括日志协议实现、节点信息采集、融合、索引和查询。

At last, detailed implementation of log-based confederation is introduced, including log protocol generation, and node information gathering, indexing and retrieving.

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知识节点是信息融合的协同处理单元。

The knowledge node is the information processing fusion unit.

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