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U.S. companies performed 18% of R&D outside the United States in 2013
U.S. companies performed 18% R&D outside United States 2013
2017/4/27
U.S. companies spent $73 billion on research and development (R&D) performed outside the United States in 2013, according to a new report by the National Science Foundation's National Center for Scien...
美日德科学家发现世界上最小超导体
最小 超导体
2010/3/31