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europium
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europium
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europium
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化学元素,元素符号Eu,原子序数63,原子量151.964(1),属周期系ⅢB族,稀土元素,镧系元素。
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europium
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63Eu
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europium
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Chemistry
>无机化学>无机化学基本概念与无机化合物>释义
europium
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space transformation of existing building
space translation invariance
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