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Hasil cari dari kata atau frase: Hf(0.01362 detik)
Found 2 items, similar to Hf.
English → English (WordNet)
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,
atomic number 72]
2: 3 to 30 megahertz [syn: high frequency]
English → English (gcide)
Hydrofluoric \Hy`dro*flu*or"ic\, a. [Hydro-, 2 + fluoric.]
Pertaining to, or containing, hydrogen and fluorine;
fluohydric; as, hydrofluoric acid.
Hydrofluoric acid (Chem.), a colorless, mobile, volatile
liquid, HF, very corrosive in its action, and having a
strong, pungent, suffocating odor. It is produced by the
action of sulphuric acid on fluorite, and is usually
collected as a solution in water. It attacks all
silicates, as glass or porcelain, is the agent employed in
etching glass, and is preserved only in vessels of
platinum, lead, caoutchouc, or gutta-percha.