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erbium
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化学元素,元素符号Er,原子序数68,原子量167.259(3),属周期系ⅢB族,稀土元素,镧系元素。
Astronomy
全称:erbium。缩写:Er
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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
erbium
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logistic mapping
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logistics
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