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单词 tungsten
释义

tungsten /tungˈstən/

noun

A rare metallic element (symbol W; atomic no 74) chiefly obtained from wolframite, used for making lamp filaments and tungsten carbide (also known as wolfram)

ORIGIN: Swed, literally heavy stone, from tung heavy, and sten stone

tungˈstate noun

A salt of tungˈstic acid (H2WO4)

tungˈstite noun

A hydrated oxide of tungsten

tungsten carbide noun

A very hard material used for the cutting tips of metal working tools

tungsten-halogen lamp noun

A compact high-intensity light source (a development of the basic tungsten lamp), in which the casing is filled with halogen, used for car-lamps, cine projectors, etc

tungsten steel noun

A type of hard steel containing varying amounts of tungsten and small quantities of carbon, used in making tools, etc

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更新时间:2024/9/21 13:17:53