备用波道 meaning in Chinese
alternate channel
guard channel
redundant channel
standby channel
Examples
- Methods of measurement for equipment used in terrestrial radio - relay systems . part 2 : measurements for sub - systems . section two - stand - by channel switching equipment
地面无线电接力系统所用设备的测量方法.第2部分:分系统测量.第2节:备用波道倒换机