channel switching equipment meaning in Chinese

通道切换设备
信道倒换机
信道交换机

Methods of measurement for equipment used in terrestrial radio - relay systems ; measurements for sub - systems ; stand - by channel switching equipment ; identical with iec 60487 - 2 - 2 , edition 1981
地面无线电中继系统设备测量方法.分系统测量.备用信
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
Methods of measurement for equipment used in terrestrial radio - relay systems - part 2 : mesurements for sub - systems - section nine 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:分系统的测量第9节:备用通道倒换设备