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hafnium

音標['h?fni?m] 讀音

漢語翻譯


n. 鉿
【化】 鉿
【醫】 鈴(72號元素)

詞型變化:

簡寫符號:Hf 

英文解釋:

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

詳細解釋:


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,用於核反應堆的控制棒,可形成氧氣和氮氣的保護膜,還用於鎢絲的製造。原子序數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

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