in.di.um
n.Symbol In （名词）符号 In A soft, malleable, silvery-white metallic element found primarily in ores of zinc and tin, used as a plating over silver in making mirrors, in plating aircraft bearings, and in compounds for making transistors. Atomic number 49; atomic weight 4.82; melting point 5'.'=C; boiling point 2,000=C; specific gravity 7.3; valence , 2, 3.See table at element 铟：一种较软、可塑性强的银白色金属物质，主要存在于锌矿床和锡矿床中，制造镜子时镀在水银上，也可镀于飞行器表面，其合金可以做晶体管。原子序数为49；原子量4.82；熔点是5'.'=C；沸点为2,000=C；比重7.3；原子价为,2,3参见 element
来源：ind(igo) ind(igo)-ium [so called from the indigo-blue lines in its spectrum] -ium [因为它的光谱显靛蓝色而得名]
