一、前言人类社会的政治、经济、军事活动、科学实验以及日常生活 ,都离不开时间和时间服务。一个国家必须采用统一的时间 (系统 )来规范、制约政府和人民大众生产、生活的方方面面 ,以保证国家、社会运转的统一性、有序性和安全性。建国 5 0多年来 ,我国时间科学研究、技术发 I. Preface The political, economic, military activities, scientific experiments and daily life of human society are inseparable from the service of time and time. A nation must adopt a unified time (system) to regulate and restrict all aspects of the production and life of the government and the general public in order to ensure the unity, orderliness and security of the operation of the country and society. More than 50 years since the founding of our country, time science research, technology development