heaviest gaseous element, 1918, from German Radon, from radium (q.v.) + -on suffix of inert gases. The element was identified in radioactive decay of radium. Alternative name niton (from Latin nitens "shining") gained currency in France and Germany.
雙語例句
1. Radon is known to be harmful to humans in large quantities.
眾所周知，大量的氡會對人體造成傷害。
來自柯林斯例句
2. There is an acknowledged risk of lung cancer from radon.
氡被認為有誘發肺癌的危險。
來自柯林斯例句
3. Radon is the daughter of radium.
氡是鐳的子體.
來自《簡明英漢詞典》
4. But in two dimensions, Radon transform is not local.
但在二維平麵上, Radon變換不具有局部性.
來自互聯網
5. Sections 301 - 311, added in 1988, relate to indoor radon abatement.