among the top 2 universities in the world, the United States accounts for 17 (in the field of natural science) in terms of scientific contribution. (Let me add here that Tsinghua University, the first in China, ranks around 6 in terms of contribution to the world's natural science.) From MIT to Caltech, it has trained the best engineers and top scientists in the world. The United States occupies eight of the top ten technology companies in the world! Intel provides chips to the whole world, Microsoft and Oracle Bone Inscriptions occupy the basic market of software industry (from Baidu to Tencent to China, all government departments use database software and technology provided by Oracle Bone Inscriptions), and the world's three major statistical analysis softwares all originate from the United States (widely used in government statistics and scientific research, especially in scientific research) ...
Since the 199s, more than 9% of the world's applied scientific and technological innovations, It is inseparable from the technical support of Silicon Valley, and there is the shadow of Silicon Valley behind it ... The United States has the world's top laboratories, including Lawrence Berkeley Laboratory, Lincoln Laboratory, California Institute of Technology Jet Propulsion Laboratory, Los Alamos Laboratory, Brookhaven Laboratory, Oak Ridge Laboratory, Bell Laboratory, Argonne Laboratory, IBM Research Laboratory ... In the field of military industry, aerospace, and medical technology, In the field of information science ... the United States ranks first in the world with unparalleled strength and overwhelming technological advantages. Because American manufacturing occupies the top of the industrial chain (the highest added value and profit), coupled with the huge domestic market advantage, the total amount of American manufacturing is still the first in the world. In addition, due to the long-term scientific and technological advantages, the United States occupies the linguistic advantage in the field of scientific research. If any scientific researcher (natural science) wants to make achievements in the field of scientific research, he must pass the English test first, because most scientific research papers in the world are written in English. Any scientific research must be based on the predecessors and read the existing scientific research papers. In other words, you can't pass English, and in today's society, you are not even qualified to become a scholar (natural science).
Of course, not only China, but also Japan, Germany, France, South Korea, Russia ... The number of patent applications filed by the National Patent Office of the United States is regarded by many scientific research evaluation institutions as one of the most important indicators to measure a country's scientific research ability and innovation ability; Therefore, there is no doubt that the United States is the world's largest science and technology country.