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。
Author(s): Xiongwei He, Fan-Shun Meng, Yanjing Su, Lijie Qiao, Shigenobu Ogata, Lei Gao
。爱思助手下载最新版本是该领域的重要参考
Цены на нефть взлетели до максимума за полгода17:55
2024年12月25日 星期三 新京报
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