| 单词 | tungsten |
| 释义 | tungsten n. Chem. a steel-grey dense metallic element with a very high melting-point, occurring naturally in scheelite and used for the filaments of electric lamps and for alloying steel etc. Usage Symb.: W. Phrases and idioms tungsten carbide a very hard black substance used in making dies and cutting tools. Derivatives tungstate n. tungstic adj. tungstous adj. Etymology: Sw. f. tung heavy + sten stone |
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