線上英漢字典／中文拼音／地址英譯、地圖查詢／計算機
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Please input chinese/english word(s), address or math. expression :

可輸入英文單字、正體中文字詞、台灣地址、計算式  ex: 2^6/5 
共發現 1 筆關於 [Rn] 的資料 (解釋內文之英文單字均可再點入查詢)

資料來源(1): WordNet (r) 2.0 [wn]

  Rn
       n 1: 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 [syn: {radon}, {atomic
            number 86}]
       2: a graduate nurse who has passed examinations for
          registration [syn: {registered nurse}]