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Relation: subclass

FlowRegion20FlowRegion is a class of things whose boundaries are relatively stable but whose constitutive m...^
Air4Air is the gaseous stuff that makes up the atmosphere surrounding Earth.^
    AirStream3AirStream is the class of FlowRegions that consist of air.^
        JetStream.JetStream is the class of high-velocity AirStreams that blow constantly in the upper atmosphere...^
        WindFlow.WindFlow is the class of variable AirStreams that are in the EarthsAtmosphere. It is also kno...^

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