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

<http://www.irandoc.acir/onto/irandoc/insp0005250>
  skos:prefLabel "تقویت‌کننده"@fa, "Amplifier"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/insp0005228> .

<http://www.irandoc.acir/onto/irandoc/insp0014777>
  skos:prefLabel "Audio-frequency amplifier"@en, "تقویت‌کننده بسامد شنیداری"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/insp0005228> .

<http://www.irandoc.acir/onto/irandoc/insp0005228>
  skos:related <http://www.irandoc.acir/onto/irandoc/insp0014777> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/insp0005250> ;
  skos:prefLabel "Preamplifier"@en, "پیش‌تقویت‌کننده"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .