一、国家急需为己任,勇于攻克重大技术难题随着人类认知能力的增长,对地球与太空的开发活动越来越注重大型化、综合化、自动化和智能化。装备制造业是人类重大开发活动的重要支撑,是一个国家综合实力的集中体现。关键密封技术是装备制造业发展的重要技术支撑。密封 First, the state urgently needs as its own responsibility to overcome major technical challenges With the growth of human cognition, development activities on Earth and space increasingly pay attention to large-scale, integrated, automated and intelligent. Equipment manufacturing industry is an important support for major human development activities, is a concentrated expression of a country’s overall strength. Key sealing technology is an important technical support for the development of equipment manufacturing industry. seal