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从世界范围来看,美国、日本等发达国家把科技创新作为基本发展的战略,在世界市场上获得了突出的竞争优势。它们研究和开发投入
From the perspective of the world, the developed countries such as the United States and Japan regard science and technology innovation as their basic strategy for development and have gained outstanding competitive advantages in the world market. They invest in research and development