单词 | vanadium |
释义 | vanadium [vǝ`nād·ē·ǝm] CHEMISTRY A metallic transition element, symbol V, atomic number 23; soluble in strong acids and alkalies; melts at 1900°C, boils about 3000°C; used as a catalyst. METALLURGY A silvery-white, ductile metal resistant to corrosion; used in alloy steels and as an x-ray target. |
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