対訳 潜在顧客
出典:Wikipedia
出典:『Wikipedia』 (2011/06/21 18:48 UTC 版)
Lead ( /ˈlɛd/) is a main-group element with the symbol Pb (from Latin: plumbum) and atomic number 82. Lead is a soft, malleable poor metal. It is also counted as one of the heavy metals. Metallic lead has a bluish-white color after being freshly cut, but it soon tarnishes to a dull grayish color when exposed to air. Lead has a shiny chrome-silver luster when it is melted into a liquid.