单词 | iridium |
释义 | iridium音标[ai'ridi?m]汉语翻译n. 铱【化】 铱Ir 【医】 铱(77号元素) 词型变化:简写符号:Ir英语解释:名词 iridium:
详细解释:i.rid.i.um 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 92.2; melting point 2,40=C; boiling point 4,30=C; specific gravity 22.42 (at 7=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92.2;熔点2,40=C;沸点4,30=C;比重22.42(在7=C时);化合价3,4参见 element 来源:Latin oris orid- [rainbow (from the colors produced by dissolving it in hydrochloric acid)] * see irido- 拉丁语 oris orid- [彩虹(将铱溶解于盐酸时会产生彩虹般的颜色)] *参见 irido--ium -ium |
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