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镭
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Encyclopedia
理学
放射性元素
释
radium
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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)。
Astronomy
全称: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
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macroscopic causality
macroscopic concept
macroscopic cross-section
macroscopic electromagnetic fields
macroscopic instability
macroscopic intelligence idea
macroscopic interaction
macroscopic irreversibility
macroscopic motion
macroscopic neutron cross section
macroscopic numerical method
macroscopic parallelism
macroscopic petrographic constituent of coal
macroscopic petrological types
macroscopic physics
macroscopic physics, macrophysics
macroscopic polarization
macroscopic quantity
macroscopic quantum effect
macroscopic quantum phenomena
macroscopic quantum phenomenon
macroscopic quantum state
macroscopic quantum tunneling
macroscopic quantum tunneling effect
macroscopic scattering cross-section
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