@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/insp0005206> .

<http://www.irandoc.acir/onto/irandoc/insp0005206>
  skos:altLabel "direct current amplifier"@en ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/insp0005250> ;
  skos:prefLabel "Dc amplifier"@en, "تقویت‌کننده جریان مستقیم"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .