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中科院研发出24亿年不差一秒的车载光频标，科技强国何时实现？
近日，据媒体报道，中科院又取得一重大突破，中科院研发出了测量24亿年不差一秒的车载光频标，对此有网友评论，美国得埋怨中国藏得太深了，那么我国成为科技强国何时可以实现呢？
紫龙防务观察935/1201
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