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 tung·sten /ˈtʌŋstən/
 鎢,鎢錳鐵礦,金屬元素

 tung·sten /ˈtəŋstən/ 名詞
 鎢

 Tung·sten n.
 1. Chem. A rare element of the chromium group found in certain minerals, as wolfram and scheelite, and isolated as a heavy steel-gray metal which is very hard and infusible. It has both acid and basic properties. When alloyed in small quantities with steel, it greatly increases its hardness. Symbol W (Wolframium). Atomic weight, 183.6. Specific gravity, 18.
 2. Min. Scheelite, or calcium tungstate. [Obs.]
 Tungsten ocher, or Tungstic ocher Min., tungstite.
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 tungsten
      n : a heavy gray-white metallic element; the pure form is used
          mainly in electrical applications; it is found in several
          ores including wolframite and scheelite [syn: wolfram,
          W, atomic number 74]

 tungsten
 Symbol: W
 Atomic number: 74
 Atomic weight: 183.85
 White or grey metallic transition element, formerly called wolfram.
 Forms a protective oxide in air and can be oxidized at high temperature.
 First isolated by Jose and Fausto de Elhuyer in 1783.