What does HF mean in NASA?
This page is about the meanings of the acronym/abbreviation/shorthand HF in the Governmental field in general and in the NASA terminology in particular.
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What does HF mean?
- hafnium, Hf, atomic number 72(noun)
- a grey tetravalent metallic element that resembles zirconium chemically and is found in zirconium minerals; used in filaments for its ready emission of electrons