1980年7月,侯伯宇参加了在美国威斯康星州举行的“国际高能物理学术会议”。会后,应谢家雄和阿帕里奎斯特教授的邀请,到耶鲁大学,与几位同行开展短期合作研究。在粒子世界中,粒子运动有一种非常重要的规律,这就是所谓对称性。对称性,人们并不陌生,在日常生活中也经常见到,如左右手的轴线对称,风扇叶轮的旋转轴心对称等。物 In July 1980, Hou Boyu attended the “International Conference on High Energy Physics” in Wisconsin, USA. After the meeting, at the invitation of Prof. Xie Jiaxiong and Prof. Aparquist, go to Yale University to conduct short-term cooperative research with several colleagues. In the particle world, particle movement has a very important law, which is called symmetry. Symmetry, people are no stranger to, often seen in everyday life, such as the symmetry of the axis of the right and left hand, symmetrical axis of rotation of the fan impeller and so on. Things