A unit of frequency equal to 1012 hertz. In SI units this is equal to 1 terahertz (THz). It was named after the French physicist Augustin Jean Fresnel (1788–1827).
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。