| 单词 | zirconium |
| 释义 | zirconium/zəːˈkəʊnɪəm /noun [mass noun] The chemical element of atomic number 40, a hard silver-grey metal of the transition series. (Symbol: Zr) Sodium is also used as a chemical reducing agent in producing titanium, zirconium, niobium, and tantalum from their fused salts....
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