Researchers used a special laser 3D printing method to melt fake lunar soil into layers and fused it with a base surface to manufacture small, heat-resistant objects, potentially paving the way to more sustainable and cost-effective space missions, a new study suggests.

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拉夫罗夫还称,关于讨论美国如何看待自身及世界的一场原则性的、全面的对话时机已经成熟。他透露,俄方正同美方在不同层级、以不同形式进行对话,既涉及具体危机,也涉及双边关系。(央视新闻)

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