单词 | 镁铝合金 |
释义 | 〔yttrium〕A silvery metallic element, not a rare earth but occurring in nearly all rare-earth minerals, used in various metallurgical applications, notably to increase the strength of magnesium and aluminum alloys. Atomic number 39; atomic weight 88.905; melting point 1,522°C; boiling point 3,338°C; specific gravity 4.45 (25°C); valence 3. See table at element 钇:一种银色金属元素,不是稀土但几乎存在于所有的稀土物质中,用于各种冶金的运用中,可显著提高镁铝合金的强度。原子序数39;原子量88.905;熔点1,522°C;沸点3,338°C;比重4.45(在25°C时);化合价3 参见 element |
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