Tungsten
Chemical element
Tungsten is a chemical element; it has symbol W and atomic number 74. Tungsten is a rare metal found naturally on Earth almost exclusively as compounds with other elements. It was identified as a new element in 1781 and first isolated as a metal... Wikipedia
钨(IUPAC名:tungsten),化学符号:W(德语:Wolfram),是化学元素,原子序数是74,是非常硬、钢灰色到白色个过渡金属。元素名字Tungsten是来自瑞典古文个白钨 ...
钨是一种金属元素,元素符号是W,原子序数为74,在元素周期表中第六周期的VIB族。钨在自然界主要呈六价阳离子,其离子半径为0.68×10 -10m。由于W 6+离子半径小,电价高,极 ...
... 钨矿黑钨矿 或 白钨矿白钨矿 沉淀。 单质为银白色有光泽的金属,硬度高,熔点高 ... 大家还在搜 钨板 钨舟 钨粉 钨棒 钨价格 钨球 废钨钢回收价格 钨钢回收多少钱一斤.