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  • radon

    radon

    n. 氡 简写符号:Rnradon详解释义 radon n.(名词) 【化】氡(Rn) 镭射气 拉东(音译名) Noun 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...

    发布时间:2026-06-08 浏览量:0 radon

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