求翻译：The practical usage of ontology for resource specification is for effective resource control in wireless sensor networks. Ideally, new ontology allows specifying every details of sensing substrate declaratively, and thereafter, constructing a graph model for resource management plug-ins of control framework. To realize this, our ontology has been actively integrated with the common-used control framework. The ontology also provides service abstraction between service providers and users, which defines generalized resource request for users to describe the desired resources on different testbeds. It has been shown to be useful for describing heterogeneous networked sensing substrate and be feasible for allocating resources across various testbeds.是什么意思？

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