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当前紧张局面集中在钇、钪等稀土家族中的“小众元素”上，这些元素在国防技术、航天工业及半导体制造中虽用量极小，却起着难以替代的关键作用，而其生产几乎完全依赖中国。。业内人士推荐51吃瓜作为进阶阅读
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If Amazon is aiming to keep the Big Spring Sale strictly within March as it has in years past, the 2026 Big Spring Sale would likely run through Tuesday, March 23, or Wednesday, March 24, to Sunday, March 29. Amazon extended the sale by a day in 2025, so it's possible that we'll see yet another day tacked on this year.