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thorium
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天然放射性元素。元素符号Th,原子序数90,原子量232.0381,锕系放射性元素。
理学
放射性元素
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thorium
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天然放射性元素,元素符号Th,原子序数90,原子量232.0377。属周期系ⅢB族,锕系元素。以北欧神话中的雷神托尔(Thor)命名。
Astronomy
全称:thorium。缩写:Th
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Chemistry
>放射化学与辐射化学>放射性元素化学>释义
thorium
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