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

<http://www.irandoc.acir/onto/irandoc/insp0002992>
  skos:prefLabel "Rectifier"@en, "یک‌سوساز"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/insp0011943> .

<http://www.irandoc.acir/onto/irandoc/insp0011944>
  skos:prefLabel "Gas-discharge tube"@en, "لامپ تخلیه گازی"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/insp0011943> .

<http://www.irandoc.acir/onto/irandoc/insp0011959>
  skos:prefLabel "Thermionic tube"@en, "لامپ گرمایونی"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/insp0011943> .

<http://www.irandoc.acir/onto/irandoc/insp0011943>
  skos:related <http://www.irandoc.acir/onto/irandoc/insp0002992> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/insp0011959>, <http://www.irandoc.acir/onto/irandoc/insp0011944> ;
  skos:prefLabel "Thyratron"@en, "تیراترون"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .