| 单词 | tungsten-halogen lamps |
| 释义 | tungsten /tungˈstən/nounA 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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