Beijing Electron-Positron Collider (BEPC)北京正負電子對撞機Beijing Electron-Positron Collider ( BEPC) completed its first successful operation on October 16, 1988.“It was hailed as another major scientific achievement next to China’s successful development of man-made satellites, nuclear”and hydrogen bombs and other achievements.1988年10月16日，我國第一座高能加速器——北京正負電子對撞機首次對撞成功。這是我國繼原子彈、氫彈爆炸成功、人造衛星上天之后，在高科技領域又一重大突破性成就。The construction of the positive and negative electron collider is the largest project in China’s history. It was proposed by the Chinese American scientist Tsungdao Lee when he first came back home in 1972, and was also the last project with instructions from Premier Zhou Enlai just before he passed away. The project broke ground in October 1984 and was completed in four years, marking major progress in Chinese science and technology.這項被認為是中國科學技術史上最大的科研工程，是在1972年由美籍華人李政道回國時首次提出，也是周恩來總理逝世前親自主持的最后一個科研項目。1984年10月7日破土動工，僅用四年時間就完成了。The collider consists of five parts: accelerating electron and positive electron accelerator; high-speed electron and positive electron storage rings; detector for collision analysis; synchronized radiation experimental zone for research and use of the constant rays released by high-speed electrons and positive electrons; and computer center for analysis and calculation of the whole process with fast computer. As a complicated systematic engineering comprised of hundreds and thousands of sophisticated special equipments, its success indicated each equipment, the quality of components, the skill of installing and testing have entered the international advanced level of the 1980s.該對撞機由五個部分組成：加速電子和正電子加速器；高速電子和正電子儲存環，探測器的碰撞分析；同步輻射實驗區的研究和利用射線的不斷釋放的高速電子和正電子；計算機數據處理中心。是由數百種、上萬臺件高精尖專用設備組成的復雜的系統工程。它能一次對撞成功，表明對撞機的各種設備、部件的質量、安裝調試的水平都達到世界一流。The success of China’s first high-energy accelerator Beijing electron-positron collider evoked strong repercussion in domestic science and technology circles and also created a stir in the international high-energy physics. Many renowned highenergy physicists in the world said that the success of Beijing electron-positron collider was a great progress in scientific development of China and also a milestone in the development of high-energy physics.我國第一臺高能加速器北京正負電子對撞機一次對撞成功的消息，在我國科技界引起強烈反響，并在國際高能物理學界引起轟動。許多在世界上享有盛譽的高能物理學家說，北京正負電子對撞機對撞成功是中國科學發展的偉大進步，是高能物理發展的一個里程碑。