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单词
radon
释义
radon
Encyclopedia
医学
天然放射性
释
radon
氡
原子序数为86的天然放射性元素。其元素符号为Rn,通常的单质形态是气体,无色无味,化学性质稳定。
理学
放射性元素
释
radon
氡
天然放射性元素,元素符号Rn,原子序数86,半衰期最长的同位素的质量数222,属周期系0族,为稀有气体。有时又称为射气。
Physics
radon
氡
86Rn
{化}
Astronomy
radon
缩写:Rn。氡
Chemistry
>放射化学与辐射化学>放射性元素化学>释义
radon
氡
随便看
decree
Decree in Farmland of the Southern Song Dynasty
Decree of the State Council of the People's Republic of China
Decree on Land
Decree on Peace
Decree on River Management of Jin Dynasty
Decree on the Democratization and Development of Television and Radio Broadcasting in the USSR
Decrees and Regulations of Song Dynasty
decrement
decremental arc
decremental chain
decremeter
de-creolization
decreolization
de-creolization continuum
decrepitation
decrescence
decrescent
Decretum Gratiani
decriminalization
decrowner
decrustation
decrypt
decryption
decryption; decipherment
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