co.balt
n.Symbol Co （名词）符号 Co A hard, brittle metallic element, found associated with nickel, silver, lead, copper, and iron ores and resembling nickel and iron in appearance. It is used chiefly for magnetic alloys, high-temperature alloys, and in the form of its salts for blue glass and ceramic pigments. Atomic number 27; atomic weight 58.9332; melting point ,495=C; boiling point 2,900=C; specific gravity 8.9; valence 2, 3.See table at element 钴：一种硬而脆的金属元素，与镍、银、铅、铜和铁矿石一起存在，外表像镍和铁。它主要用于磁合金、高温合金、以盐的形式用于蓝色玻璃和陶瓷颜料。原子序数27；原子量58.9332；熔点,495=C；沸点2,900=C；比重8.9；原子价2，3参见 element
来源：German Kobalt 德语 Kobalt from Middle High German kobolt [goblin (from the trouble it gave silver miners)] 源自 中古高地德语 kobolt [麻烦（源于它给银矿工人带来的麻烦）]
