Lead Production
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Lead is a very corrosion-resistant, dense, ductile, and malleable blue-gray metal that has been used for at least 5,000 years. Early uses of lead included building materials,...
铅（Lead）是一种具备极强耐腐蚀性、高密度、延展性与可锻性的蓝灰色金属，其应用历史至少已有5000年。铅的早期用途包括建筑材料……
