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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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"We could find ourselves having difficulty obtaining missiles and weapons to defend our skies," he told Italian newspaper Corriere della Sera. "The Americans and their allies in the Middle East might need them to defend themselves, for example Patriot missiles.",这一点在wps下载中也有详细论述
Fixes: tag relationships