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氢
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理学
氢
释
hydrogen
氢
化学元素。元素符号H,原子序数1,原子量1.008,属周期系ⅠA族。
Astronomy
全称:hydrogen。缩写:H
氢
Chemistry
>无机化学>无机化学基本概念与无机化合物>释义
hydrogen
氢
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