English-Vietnamese Dictionary
◊ HF
◊hf
▫ (viết tắt)
▪ tần số cao (high frequency)
 hey-day  heyday  hf  hgv  h-hour 
English Dictionary
◊ HF
Hf
n 1: a gray tetravalent metallic element that resembles zirconium
chemically and is found in zirconium minerals; used in
filaments for its ready emission of electrons [syn: {hafnium},
{Hf}, {atomic number 72}]
2: 3 to 30 megahertz [syn: {high frequency}, {HF}]
 hexose  heyday  hf  hg  hi