氡[dōng] 基本解释:
新英汉大词典:
- 氡[dōng]
- 名词- {化} radon (86号元素,符号 Rn)
以上内容来源于:《新汉英大辞典》
例句与用法:
A radioactive, inert, gaseous isotope of radon, with a half-life of3.92 seconds.
Any of several radioactive gases that are isotopes of radon and are products of radioactive decay.
氡的其他解释: