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

<http://www.irandoc.acir/onto/irandoc/insp0011961>
  skos:prefLabel "Tetrode"@en, "لامپ چارقطبی"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/insp0011963> .

<http://www.irandoc.acir/onto/irandoc/insp0011964>
  skos:prefLabel "Electron tube"@en, "لامپ الکترونی"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/insp0011963> .

<http://www.irandoc.acir/onto/irandoc/insp0011962>
  skos:prefLabel "Triode"@en, "لامپ سه‌قطبی"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/insp0011963> .

<http://www.irandoc.acir/onto/irandoc/insp000395>
  skos:prefLabel "Vacuum microelectronics"@en, "ریزالکترونیک خلاء"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/insp0011963> .

<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:related <http://www.irandoc.acir/onto/irandoc/insp0011963> .

<http://www.irandoc.acir/onto/irandoc/insp0012638>
  skos:prefLabel "Diode"@en, "دیود"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/insp0011963> .

<http://www.irandoc.acir/onto/irandoc/insp0011963>
  skos:narrower <http://www.irandoc.acir/onto/irandoc/insp0011962>, <http://www.irandoc.acir/onto/irandoc/insp0011961> ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/insp0011959>, <http://www.irandoc.acir/onto/irandoc/insp000395>, <http://www.irandoc.acir/onto/irandoc/insp0012638> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/insp0011964> ;
  skos:prefLabel "لامپ خلاء"@fa, "Vacuum tube"@en .