radio relay
signal transmitter
transmission range
communication relay
1. The relay transmitter extends the coverage area.
转发器扩大了覆盖区域。
2. They installed a relay transmitter on the tower.
他们在塔上安装了一个转发器。
3. The signal is boosted by the relay transmitter.
信号通过转发器进行了增强。
A: Can the signal reach the valley?
A：信号能传到山谷里吗？
B: Not without a relay transmitter.
B：如果没有转发器的话，是不可以的。
1) 接收并重新发射信号的装置
2) 用于扩大通信距离的设备
3) 无线电通信中的中继设备
1. 转发器
e.g. The relay transmitter is functioning normally.
转发器运行正常。
noun
1. A device that receives a signal and retransmits it to extend its range.