国际标准化组织第四技术委员会ISO/TC4滚动轴承下属的飞机机架轴承、关节轴承、仪器用精密轴承及直线运动轴承四个分技术委员会会议于1981年5月18～22日在美国弗吉尼亚州阿灵顿城举行,我国派出以万长森同志为首的代表小组三人参加了这次会议。参加会议的有美国、英国、瑞典、西德、中国、法国、日本及意大利八个国家, The four technical committees of the ISO 4th technical committee ISO/TC4 rolling bearing affiliated aircraft frame bearings, articulated bearings, precision bearings for instruments and linear motion bearings were held on May 18-22, 1981 in Alling, VA, USA. When the city was held, three representatives from the delegation led by Comrade Wan Changsen were present at the meeting. Attending the meeting are the United States, Britain, Sweden, West Germany, China, France, Japan and Italy.