词族 · radon
词形变化
中文词源
radon 氡
rad-,辐射，放射，-on,表惰性气体，词源同 neon.
英语词源
- radon (n.)
- 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.
权威例句
- 1. Radon is known to be harmful to humans in large quantities.
- 众所周知，大量的氡会对人体造成伤害。
- 2. There is an acknowledged risk of lung cancer from radon.
- 氡被认为有诱发肺癌的危险。
- 3. Radon is the daughter of radium.
- 氡是镭的子体.
- 4. But in two dimensions, Radon transform is not local.
- 但在二维平面上, Radon变换不具有局部性.
- 5. Sections 301 - 311, added in 1988, relate to indoor radon abatement.
- 1988年增加的第301—311条, 涉及的是室内氧的控制问题.