radon

英 ['reɪdɒn] 美 ['reɪdɑːn]

• n. 氡

详尽释义

n. 名词

1. 【化】氡（Rn）
2. 镭射气
3. 拉东（音译名）

英英释义

Noun:

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

例句

用作名词 (n.)

1. Radon is the daughter of radium.
   氡是镭的子体。
2. Where does the indoor radon come from?
   室内氡气是从哪里而来?

词汇搭配

• radon breath analysis 呼吸中的氡含量分析...
• radon gas 氡气

近反义词

【近义词】

• Rn [化]元素氡的符号（=r...