nt:unstructured is the most flexible node type.

unstructured 是最灵活的节点类型。

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This ability to use ESQL to extend mappings beyond the capabilities provided by the range of XPath functions offered by the node itself makes the mapping node a very flexible transformation tool.

使用 ESQL 扩展映射的能力（节点本身提供的一系列 XPath 功能所不能提供的映射功能），使得映射节点成为非常灵活的转换工具。

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The node localization technology in wireless sensor networks was studied, and a flexible trilateration localization(FTL) based on RSSI was presented.

研究了无线传感器节点定位问题，在三边测量法定位基础上提出了一种基于RSSI的灵活的节点定位机制（FTL）。

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