radon
英 ['re?d?n]
美['redɑn]
- n. [化學] 氡（元素符號Rn）
- n. (Radon)人名；(法、塞)拉東
暢通詞匯低頻詞
中文詞源
radon 氡
rad-,輻射，放射，-on,表惰性氣體，詞源同 neon.
英文詞源
- 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.
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(fā)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.
- 但在二維平面上, Radon變換不具有局部性.
來自互聯(lián)網
- 5. Sections 301 - 311, added in 1988, relate to indoor radon abatement.
- 1988年增加的第301—311條, 涉及的是室內氧的控制問題.
來自英漢非文學 - 環(huán)境法 - 環(huán)境法