铝
铝（Aluminium 或Aluminum）是一种化学元素，属于硼族元素，渠个化学符号是Al，原子序数是13。相对密度是2.70。铝是一种较软个易延展个银白色金属。铝是地壳中第三大丰度个元素（仅次于氧搭硅），也是丰度最大个金属，勒地球个固体表面中占约8%个质量。
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