名詞 hafnium:

1. a grey tetravalent metallic element that resembles zirconium chemically and is found in zirconium minerals; used in filaments for its ready emission of electrons
   同義詞：Hf, atomic number 72

haf.ni.um

n.Symbol Hf （名詞）符號 Hf
A brilliant, silvery, metallic element separated from ores of zirconium and used in nuclear reactor control rods, as a getter for oxygen and nitrogen, and in the manufacture of tungsten filaments. Atomic number 72; atomic weight 78.49; melting point 2,220=C; boiling point 5,400=C; specific gravity 3.3; valence 4.See table at element
鉿：一種鋯礦中分離出來的亮銀色金屬元素，用于核反應堆的控制棒，可形成氧氣和氮氣的保護膜，還用于鎢絲的制造。原子序數(shù)72；原子量78.49；熔點2,220=C；沸點5,400=C；比重3.3；原子價4參見 element

來源：
After Hafnia , Medieval Latin name for Copenhagen, Denmark
源自 哈夫尼爾 ，丹麥哥本哈根的中世紀拉丁名