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

<http://www.irandoc.acir/onto/irandoc/NEMA0004945>
  skos:prefLabel "هواپیماهای فراصوت"@fa, "hypersonic aircraft"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/NEMA0003225> .

<http://www.irandoc.acir/onto/irandoc/NEMA0003225>
  skos:scopeNote "صدای که بر اثر امواج پرفشار حاصل از پرواز هواپیمای ابرصوتی در زمین به گوش می‌رسد."@fa ;
  skos:related <http://www.irandoc.acir/onto/irandoc/NEMA0004945>, <http://www.irandoc.acir/onto/irandoc/NEMA0004942>, <http://www.irandoc.acir/onto/irandoc/NEMA0007264> ;
  skos:broader <http://www.irandoc.acir/onto/irandoc/NEMA0003229> ;
  skos:prefLabel "غرش صوتی"@fa, "sonic boom"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept .

<http://www.irandoc.acir/onto/irandoc/NEMA0004942>
  skos:prefLabel "هواپیماهای زبرصوت"@fa, "supersonic aircraft"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/NEMA0003225> .

<http://www.irandoc.acir/onto/irandoc/NEMA0007264>
  skos:prefLabel "محیط صوتی"@fa, "acoustic environment"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:related <http://www.irandoc.acir/onto/irandoc/NEMA0003225> .

<http://www.irandoc.acir/onto/irandoc/NEMA0003229>
  skos:prefLabel "امواج صوتی"@fa, "sound waves"@en ;
  a <http://www.irandoc.ac.ir/onto/irandoc-meta/Concept>, skos:Concept ;
  skos:narrower <http://www.irandoc.acir/onto/irandoc/NEMA0003225> .