使用功能本体实现现有产品结构到其功能的映射，利用功能分解树表达产品的设计原理。
The existing product structure can be mapped to its product functions by using functional ontology, and the design principles can be represented by functional decomposition tree.
本文通过功能组分解和事件树分析技术，实现了这个目的。
This goal has been realized by use of function group decomposition and event tree analysis technique.
本文通过功能组分解和事件树分析技术，实现了这个目的。
This goal has been realized by use of function group decomposition and event tree analysis technique.
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