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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
regular curve
regular cusp
regular decagon
regular decomposition
regular dependence
regular design
regular determinant
regular differentiable mapping
regular differential
regular differential equation
regular differential form
regular differential operator
regular differential system
regular Dirichlet form
regular distribution
regular dodecagon
regular dodecahedron
regular dodecahedron group
regular domain
regular edge coloring
regular eigenvalue problem
regular element
regular element of a Lie algebra
regular embedded graph
regular embedding
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