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When a SpaceX rocket failure set the skies aflame over western Europe last February, no-one was sure if the debris was also polluting our atmosphere.
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anadim (@dimitrispapail)
一名美国政府官员表示，尽管钇和钪的短缺尚未直接拖累喷气发动机和芯片的产量，但部分美国制造商已出现来自中国的特定稀土原料“短缺”问题。