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 health
radon例句
用作名词(n.)
Radon is the daughter of radium.
氡是镭的子体。
Where does the indoor radon come from?
室内氡气是从哪里而来?
radon近义词
Rn