See pulse train.
The ratio in a pulse or square-wave signal of the pulse duration to the time between successive pulses. In a perfect square wave the mark-space ratio is unity. See also mark.
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。