The original name for Terrestrial Time, introduced in 1984. In 1991 the word ‘dynamical’ was dropped; the two time-scales are equivalent in all but name.
科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。