| 释义 |
protection span | A section of a carrier transmission system, including repeated line and in some cases terminal equipment, within which a broadband protection channel can be substituted for a working broadband channel in the event of equipment or line failure in the working channel.; 载波传输系统的一区段,包括重复的线路,有时还包括终端设备。在工作信道中的设备或 线路出现故障的时候,一个宽带保护信道可以替代正在工作的宽带信道。 |
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