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tungsten    音標拼音: [t'ʌŋstən]
n. 鎢,鎢錳鐵礦,金屬元素

鎢,鎢錳鐵礦,金屬元素

tungsten
n 1: a heavy grey-white metallic element; the pure form is used
mainly in electrical applications; it is found in several
ores including wolframite and scheelite [synonym: {tungsten},
{wolfram}, {W}, {atomic number 74}]

Tungsten \Tung"sten\ (t[u^]ng"st[e^]n), n. [Sw. tungsten (cf.
Dan. tungsteen, G. tungstein); tung heavy (akin to Dan. tung,
Icel. [thorn]ungr) sten stone. See {Stone}.]
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.
[1913 Webster]

2. (Min.) Scheelite, or calcium tungstate. [Obs.]
[1913 Webster]

{Tungsten ocher}, or {Tungstic ocher} (Min.), tungstite.
[1913 Webster]

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  • Tungsten - Wikipedia
    It is a metal found naturally on Earth almost exclusively in compounds with other elements It was identified as a distinct element in 1781 and first isolated as a metal in 1783 Its important ores include scheelite and wolframite, the latter lending the element its alternative name
  • Tungsten e-Invoice Network
    Not part of the Tungsten e-Invoice Network yet? Register
  • Tungsten | Uses, Properties, Facts | Britannica
    tungsten (W), chemical element, an exceptionally strong refractory metal of Group 6 (VIb) of the periodic table, used in steels to increase hardness and strength and in lamp filaments
  • Tungsten Prices | Live APT Prices, Market Data Analysis
    Tungsten has the highest melting point of any element at 3,422°C, nearly double the density of lead, and hardness rivaling diamond as carbide Its price has outpaced gold, silver, copper, and oil combined over the past year
  • Tungsten - Element information, properties and uses | Periodic Table
    Tungsten has the highest melting point of all metals and is alloyed with other metals to strengthen them Tungsten and its alloys are used in many high-temperature applications, such as arc-welding electrodes and heating elements in high-temperature furnaces
  • Why tungsten prices are rising so fast: inside the supply crunch
    It is a supply-chain stress test of a metal now at the center of global geopolitics and national security Tungsten is known as one of the strongest-known naturally-occurring materials and is critical across modern technology, from smart phones to hypersonic missiles
  • Tungsten Facts, Symbol, Discovery, Properties, Uses
    Tungsten (pronunciation TUNG-sten [2]), represented by the chemical symbol or formula W [1], is a hard, brittle element belonging to the family of transition metals [3]
  • Tungsten Facts – W or Atomic Number 74 (Wolfram)
    Tungsten is a chemical element with the symbol W and atomic number 74 that stands out for its remarkable properties, especially its extreme melting point The name ‘tungsten’ comes from the Swedish words “tung sten”, meaning “heavy stone”
  • Tungsten | Properties Uses | Almonty Industries
    Discover Tungsten's unique properties, various applications, and how our mining and exploration efforts contribute to meeting global demand





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