请输入您要查询的字词:

 

单词 pulse-numbers modulation
释义 pulse-numbers modulation
[`pǝls ¦nǝm·bǝrz ´mäj·ǝ´lā·shǝn]
COMMUNICATIONS
Modulation in which a pulse carrier's pulse density per unit time varies in accordance with a modulating wave, by making systematic omissions without changing the phase or amplitude of the transmitted pulses; as an example, the omission of every other pulse could correspond to zero modulation; the reinsertion of some or all pulses then corresponds to positive modulation, and the omission of more than every other pulse corresponds to negative modulation.
随便看

 

科学参考收录了103327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。

 

Copyright © 2000-2023 Sciref.net All Rights Reserved
京ICP备2021023879号 更新时间:2024/6/30 23:50:47