| 释义 |
zir·co·ni·um AHD[zûr-kōʹnē-əm] D.J.[zɜːˈkəʊniːəm]K.K.[zɝˈkoniəm]n.Symbol Zr （名词）符号 Zr - A lustrous, grayish-white, strong, ductile metallic element obtained primarily from zircon and used chiefly in ceramic and refractory compounds, as an alloying agent, and in nuclear reactors as a highly corrosion-resistant alloy. Atomic number 40; atomic weight 91.22; melting point 1,852°C; boiling point 3,578°C; specific gravity 6.56 (20°C); valence 2, 3, 4. See table at element 锆：一种有光泽的、坚固的、可伸展的灰白色金属元素，主要从锆石中提炼。作为合金剂在陶器制造和耐火化合物中大量使用，而在核反应器中用作一种高度抗腐蚀合金。原子序数40；原子量91.22；熔点1,852°C；沸点3,578°C；比重6.56（在20°C时）；化合价2,3,4 参见 element
|