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

<http://www.irandoc.acir/onto/irandoc/insp0001940>
  skos:prefLabel "Frequency stability"@en, "پایداری بسامد"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/insp0001915> .

<http://www.irandoc.acir/onto/irandoc/insp0009407>
  skos:prefLabel "Atomic clock"@en, "ساعت اتمی"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/insp0001915> .

<http://www.irandoc.acir/onto/irandoc/insp0007244>
  skos:prefLabel "Time measurement"@en, "اندازه‌گیری زمان"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/insp0001915> .

<http://www.irandoc.acir/onto/irandoc/insp0001915>
  skos:related <http://www.irandoc.acir/onto/irandoc/insp0001940>, <http://www.irandoc.acir/onto/irandoc/insp0007244>, <http://www.irandoc.acir/onto/irandoc/insp0009407> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/insp0007102>, <http://www.irandoc.acir/onto/irandoc/insp0001918> ;
  skos:prefLabel "Frequency standard"@en, "استاندارد بسامد"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .

<http://www.irandoc.acir/onto/irandoc/insp0007102>
  skos:prefLabel "Frequency measurement"@en, "اندازه‌گیری بسامد"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/insp0001915> .

<http://www.irandoc.acir/onto/irandoc/insp0001918>
  skos:prefLabel "Measurement standard"@en, "استاندارد اندازه‌گیری"@fa ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/insp0001915> .