自1974年起,中美双方经过多次互访、交流和考察,增强了双方的彼此了解,确定了双方地震科技合作的科学领域、内容以及原则基础。因此,在1980年1月24日,中美双方代表在北京签定了地震科技合作议定书。现将中美双方开展的一些重大交流合作活动汇编如下: 1974年4月以顾功叙教授为团长的第一个中国 Since 1974, both China and the United States have made mutual visits, exchanges and inspections to enhance mutual understanding between the two sides and determined the scientific field, content and principle basis for the cooperation in science and technology between the two sides. Therefore, on January 24, 1980, representatives of China and the United States signed the Protocol on Cooperation in Earthquake Science and Technology in Beijing. The major exchanges and cooperation activities carried out by China and the United States are now compiled as follows: In April 1974, the first China headed by Professor Gu Gong-suo