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镨
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镨
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镨
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praseodymium
镨
化学元素。元素符号Pr,原子序数59,原子量140.90766(2),属周期系ⅢB族,稀土元素,镧系元素。
Astronomy
全称:praseodymium。缩写:Pr
镨
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>无机化学>无机化学基本概念与无机化合物>释义
praseodymium
镨
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