The US has access to more than enough raw copper to meet domestic demand, according to new research on the crucial metal that suggests developing processing capacity is more important than an expansion of stockpiles planned by the Trump administration.
最新研究显示，就这种关键金属而言，美国可获得的铜原料供应已绰绰有余，足以满足国内需求；与扩充特朗普政府计划中的库存相比，发展加工产能更为重要。
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