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工学
非必需微量元素
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chromium
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一种化学元素。
理学
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chromium
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化学元素,元素符号Cr,原子序数24,原子量51.9961(6),属周期系ⅥB族。
Astronomy
全称:chromium。缩写:Cr
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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
chromium
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