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

<http://www.irandoc.acir/onto/irandoc/NEMA0004090>
  skos:prefLabel "تقویت‌کننده‌ها"@fa, "amplifiers"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/NEMA0004086> .

<http://www.irandoc.acir/onto/irandoc/NEMA0004086>
  skos:related <http://www.irandoc.acir/onto/irandoc/NEMA0004089>, <http://www.irandoc.acir/onto/irandoc/NEMA0006230> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/NEMA0004090> ;
  skos:prefLabel "تقویت‌کننده‌های جریان"@fa, "current amplifiers"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .

<http://www.irandoc.acir/onto/irandoc/NEMA0004089>
  skos:prefLabel "تقویت‌کننده‌های ولتاژ"@fa, "voltage amplifiers"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/NEMA0004086> .

<http://www.irandoc.acir/onto/irandoc/NEMA0006230>
  skos:prefLabel "جریان‌های الکتریکی"@fa, "electric currents"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/NEMA0004086> .