《radon.doc》查看内容详情
亲，网页上所展示的文章内容和下载文档内容是一致的，下载前请点击“查看内容详情”确认是否您所要下载的内容。
n.氡（元素符号Rn）； 英英释义： radon[ 'reidɔn ]n.a radioactive gaseous element formed by the disintegration of radium; the heaviest of the inert gasses; occurs naturally (especially in areas over granite) and is considered a hazard to health同义词：Rnatomic number 86
