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calcium
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calcium
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钙
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calcium
钙
化学元素,元素符号Ca,原子序数20,原子量40.078(4),属周期系ⅡA族,碱土金属。
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calcium
缩写:Ca。钙
Chemistry
>无机化学>无机化学基本概念与无机化合物>释义
calcium
钙
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