Sat, 01 Dec 2007 17:05:18 GMTlate_80 的个人空间http://space.taobao.com/9cfc1359d629621c0137686fabef23d4.htmzh-cnSat, 01 Dec 2007 17:05:18 GMT2007-12-01T17:05:18Zzh-cnhttp://item.feedsky.com/~taobao.com/9cfc1359d629621c0137686fabef23d4/~6191824/33234639/4299764/1/item.html钨&nbsp;1、概述&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;钨是稀有金属，也是重要的战略物资，在古代被称为“重石”。钨在地壳中的含量为0.001%。已发现的含钨矿物有20种。钨矿床一般伴随着花岗质岩浆的活动而形成。经过冶炼后的钨是银白色金属，熔点极高。2、性质&nbsp;&nbsp;&nbsp;&...<br /><!-- Feedsky ad --><a href="http://feed.feedsky.com/~cpm/c/be28ada50bcbfd0b56e9a43b68210af3/taobao.com/9cfc1359d629621c0137686fabef23d4"><img src="http://feed.feedsky.com/~cpm/be28ada50bcbfd0b56e9a43b68210af3/taobao.com/9cfc1359d629621c0137686fabef23d4/s.gif" border="0" style="margin-top:5px;" /></a><!-- /Feedsky ad -->Sun, 02 Dec 2007 01:05:18 +0800late_80http://space.taobao.com/9cfc1359d629621c0137686fabef23d4/show_blog-12493287.htmlate_80http://space.taobao.com/9cfc1359d629621c0137686fabef23d4/show_blog-12493287.htmhttp://space.taobao.com/blog/9cfc1359d629621c0137686fabef23d4/rss.xmltaobao.com/9cfc1359d629621c0137686fabef23d4/~6191824/33234639/4299764