求翻译：For the clarity purpose, the predicate “hasExtInterference” is encoded as an object property, separating the definition of the ExternalInterference from environment so that interference factors, such as, the external communication channel, signal power and traffic (external data/packet rate), can be clearly incorporated in another entity. The design of the Environment and ExternalInterference follow the conceiving of reliable and predictable experimentation that allows user’s explicit specification of the uncertainty factors in addition to specifying sensing resources. As is aforemen是什么意思？

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