Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/6811
Is Reference of Orifice-plaat-nl#Sense
Plaque à orifice-fr#Sense
Plaque perforée-fr#Sense
Blendenscheibe-de#Sense
Diaphragme-fr#Sense
Orifice plate-en#Sense