<complexType name="AreaPerVolumeMeasureType">
<annotation>
<documentation>Specific surface or surface area density: Surface area per unit volume. Used for characterizing porous media, particle systems, and fracture networks. Common units include 1/m, m²/m³, and capture units (cu). Important in permeability and filtration calculations.</documentation>
</annotation>
<simpleContent>
<extension base="diggs:DescriptorValueType">
<attribute name="uom" type="diggs:AreaPerVolumeUomEnumType">
<annotation>
<documentation>The unit of measure for specific surface or surface area density.</documentation>
</annotation>
</attribute>
</extension>
</simpleContent>
</complexType>
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