radon
音標['reid?n] 讀音漢語翻譯
n. 氡
【化】 氡Rn
【醫】 氡(86號元素), 鐳射氣
詞型變化:
簡寫符號:Rn英文解釋:
名詞 radon:
- 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同義詞:Rn, atomic number 86
例句:
- Any of several radioactive gases that are isotopes of radon and are products of radioactive decay.射氣幾種氡的同位素的放射性氣體,是放射性物質衰變的產物
- A radioactive, inert, gaseous isotope of radon, with a half-life of3.92 seconds.
詳細解釋:
ra.don
n.Symbol Rn (名詞)符號 Rn A colorless, radioactive, inert gaseous element formed by the radioactive decay of radium. It is used as a radiation source in radiotherapy and to produce neutrons for research. Its most stable isotope is Rn 222 with a half-life of 3.82 days. Atomic number 8'; melting point -7=C; boiling point -'.8=C; specific gravity (solid) 4.See table at element 氡:一種無色、有放射性的惰性氣體元素,由鐳蛻變產生。在放射療法中可用作輻射源,在科研中可用於製造中子。它最穩定的同位素是Rn222。半衰期為3.82天。原子序數8';熔點-7=C;沸點-'.8=C;比重(固態)4參見 element
來源:rad(ium) rad(ium)-on 2-on2
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