4185| 1
|
[通信标准] G.222 设计2500km载波传输系统的噪声指标 |
![]() |
| |||||||||||||||
版规|手机版|C114 ( 沪ICP备12002291号-1 )|联系我们 |网站地图
GMT+8, 2025-8-11 11:21 , Processed in 0.098620 second(s), 21 queries , Gzip On.
Copyright © 1999-2025 C114 All Rights Reserved