tml:propName 

from Physical Property (Phenomenon) Dictionary

Element Information

Model

Attributes

QName Type Fixed Default Use Inheritable Annotation
bindUid xs:string optional
bindUidRef xs:string optional
name xs:string optional 
short descriptive name of element
uid xs:anyURI optional 
unique ID for this element
uidRef xs:anyURI optional 
the contents of this element are exactly the same as the contents of the uidRef element. no need repeating it. (similar to xlink)

Source 

<xs:element name="propName" minOccurs="0">
  <xs:annotation>
    <xs:documentation>from Physical Property (Phenomenon) Dictionary</xs:documentation>
  </xs:annotation>
  <xs:complexType>
    <xs:simpleContent>
      <xs:extension base="tml:BindType">
        <xs:attributeGroup ref="tml:uid_uidRef"/>
      </xs:extension>
    </xs:simpleContent>
  </xs:complexType>
</xs:element>

Sample