单词 | osmium |
释义 | osmium['ɒzmiəm]n. 锇【化】 锇Os【医】 锇(76号元素) osmium os.mi.um AHD: [¼z“m¶-…m] D.J. [6Kzmi8*m]K.K. [6$zmi*m]n.Symbol Os (名词)符号 Os A bluish-white, hard metallic element, found in small amounts in osmiridium, nickel, and platinum ores. It is used as a platinum hardener and in making pen points, phonograph needles, and instrument pivots. Atomic number 76; atomic weight 190.2; melting point 3,000&9{=}C; boiling point 5,000&9{=}C; specific gravity 22.57; valence 2, 3, 4, 8.See table at element 锇:一种白色带点蓝色的硬金属元素,在铱锇矿、镍及铂的矿石中有少量储藏。用作铂的硬化剂并用于制作笔尖、唱片针和仪表枢轴。原子序数为76;原子量为190.2;熔点为3,000&9{=}C;沸点为5,000&9{=}C;比重为22.57;化合价为2,3,4,8参见 element语源:From Greek osm¶ [smell (from the strong odor of osmium tetroxide)] 源自 希腊语 osm¶ [气味(由四氧化锇的强烈气味得名)] |
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