radioactivity 详细解释
radioactivity
['reidiəuæk'tiviti]
n.放射性, 辐射
词形变化
副词: radioactively |
英英释义
名词 radioactivity:
the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay
同义词：radiation
补充
radioactivityradioactivity英:[ˌreidiəuækˈtivəti] 美:[ˌredioækˈtɪvɪti]n.1.放射(性)2.辐射能例句
1. the radioactivity of certain elements某些元素的放射性热门单词推荐
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