单词 | ytterbium |
释义 | ytterbium[i'tə:biəm]n. 镱【化】 镱Yb【医】 镱(70号元素) ytterbium yt.ter.bi.um AHD: [¹-tûr“b¶-…m] D.J. [!6tT8bi8*m]K.K. [!6tPbi*m]n.Symbol Yb (名词)符号 Yb A soft, bright, silvery rare-earth element occurring in two allotropic forms and used as an x-ray source for portable irradiation devices, in some laser materials, and in some special alloys. Atomic number 70; atomic weight 173.04; melting point 824&9{=}C; boiling point 1,196&9{=}C; specific gravity 6.972 or 6.54 (25&9{=}C) depending on allotropic form; valence 2, 3.See table at element 镱:一种柔软、明亮的银色稀土元素,存在于两种同素异形体中,被用作便携式的放射线治疗设备的X射线源,也用于一些激光物质和特殊合金中。原子序数70;原子量173.04;熔点824&9{=}C;沸点1,196&9{=}C;比重依两种同素形体6.972或6.54(25&9{=}C);化合价2,3参见 element语源:After Ytterby , a town in Sweden 源自 依特白 ,瑞典一城镇 继承用法:ytter“bic AHD: [-b¹k] (形容词) |
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