@prefix skos: <http://www.w3.org/2004/02/skos/core#> .

<http://www.irandoc.acir/onto/irandoc/NEMA0004055>
  skos:related <http://www.irandoc.acir/onto/irandoc/NEMA0003230>, <http://www.irandoc.acir/onto/irandoc/NEMA0004038> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/NEMA0004005>, <http://www.irandoc.acir/onto/irandoc/NEMA0004062> ;
  skos:prefLabel "وسایل اندازه‌گیری صوتی"@fa, "acoustic measuring instruments"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .

<http://www.irandoc.acir/onto/irandoc/NEMA0004038>
  skos:prefLabel "پایشگرهای آلودگی"@fa, "pollution monitors"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/NEMA0004055> .

<http://www.irandoc.acir/onto/irandoc/NEMA0004005>
  skos:prefLabel "تجهیزات صوتی"@fa, "acoustic equipment"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/NEMA0004055> .

<http://www.irandoc.acir/onto/irandoc/NEMA0004062>
  skos:prefLabel "وسایل اندازه‌گیری"@fa, "measuring instruments"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/NEMA0004055> .

<http://www.irandoc.acir/onto/irandoc/NEMA0003230>
  skos:prefLabel "انرژی صوتی"@fa, "sound energy"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/NEMA0004055> .