什么是科学中心?日本著名科学技术史学家汤浅光朝认为:如果一个国家的科学成果占到世界科学成果的25%以上,那么,就可以把这个国家称为科学中心。为了能科学、公平的评价一个国家是否是科学中心, What is a science center? The famous Japanese historian of science and technology Tang Guanguang pointed out: If a country's scientific achievements account for more than 25% of the world's scientific achievements, then this country can be called a scientific center. In order to scientifically and fairly evaluate whether a country is a science center,