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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。。heLLoword翻译官方下载是该领域的重要参考
It has also trimmed its five-year capital spending plan to £1.7bn from £2bn by delaying investment in electric vehicle technology.。WPS下载最新地址对此有专业解读
Many scientists agree that it would be the best or perhaps only way to provide continuous power on the lunar surface.
在欧洲，17世纪贵族私人游艇已成风尚。美国游艇产业在19世纪中后期已逐步兴起，二战后进入高速成长期，形成集制造、销售、维修、服务于一体的完整工业体系。。业内人士推荐同城约会作为进阶阅读