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radium
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radium
Encyclopedia
理学
放射性元素
释
radium
镭
天然放射性元素,元素符号Ra,原子序数88,半衰期最长的同位素的质量数226,属周期系ⅡA族,碱土金属元素。英文名来源于拉丁文radius(射线)。
Physics
radium
镭
88Ra
{化}
Astronomy
radium
缩写:Ra。镭
Chemistry
>放射化学与辐射化学>放射性元素化学>释义
radium
镭
随便看
spectral line self reversal
spectral line self-reversal
spectral line shape
spectral lineshape
spectral line shift
spectral line source
spectral line splitting
spectral line width
spectral linewidth
spectral luminous efficacy function
spectral luminous efficiency
spectrally isomorphic operator
spectrally unique
spectral manifold
spectral mapping
spectral mapping theorem
spectral matching
spectral matrix
spectral measure
spectral measurement
spectral method
spectral method of colorimetry
spectral mixing model
spectral model
spectral moment
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