Engelsk navneord: Hf |
1. | Hf (om masse el. substans) a grey tetravalent metallic element that resembles zirconium chemically and is found in zirconium minerals; used in filaments for its ready emission of electrons |
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| Termer med samme betydning (synonymer) | atomic number 72, hafnium |
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| Mindre specifikke termer | metal, metallic element |
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2. | HF (om egenskab) 3 to 30 megahertz |
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| Termer med samme betydning (synonymer) | high frequency |
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| Mindre specifikke termer | radio frequency |
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| Omfatter disse overordnede termer | electromagnetic spectrum |
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