| 单词 | iridium |
| 释义 | iridium[ai'ridiəm]n. 铱【化】 铱Ir【医】 铱(77号元素) iridium i.rid.i.um AHD: [¹-r¹d“¶-…m] D.J. [!6r!di8*m]K.K. [!6r!di*m]n.Symbol Ir （名词）符号 Ir A very hard and brittle, exceptionally corrosion-resistant, whitish-yellow metallic element occurring in platinum ores and used principally to harden platinum and in high-temperature materials, electrical contacts, and wear-resistant bearings. Atomic number 77; atomic weight 192.2; melting point 2,410&9{=}C; boiling point 4,130&9{=}C; specific gravity 22.42 (at 17&9{=}C); valence 3, 4.See table at element 铱：一种坚硬而脆的，极抗腐蚀的黄白色金属，存在于铂矿中，主要用来硬化铂和制造耐高温材料，电器接头和耐磨轴承。原子序数77；原子重192.2；熔点2,410&9{=}C；沸点4,130&9{=}C；比重22.42（在17&9{=}C时）；化合价3，4参见 element语源:1. Latin &9{ºris} &9{º}rid- [rainbow (from the colors produced by dissolving it in hydrochloric acid)] * see irido- 拉丁语 &9{ºris} &9{º}rid- [彩虹（将铱溶解于盐酸时会产生彩虹般的颜色）] *参见 irido-2. -ium -ium |
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