a gray tetravalent metallic element that resembles zirconium chemically and is found in zirconium minerals; used in filaments for its ready emission of electrons
التركية - التركية
تعريف hafniyum في التركية التركية القاموس.
Atom numarası 72, atom ağırlığı 178,6 olan, az rastlanır bir element. Kısaltması Hf