A switch provided at the receiving relay connects one communication channel and provides a connecting link between the communication channel and the receiving relay.
设置在该接收继电器上的一个开关连接一个通信信道，并且在通信信道和接收继电器之间提供一个连接的链路。
2
Apply to relay Box for alarm indicator connecting between several alarm indicator column and alarm indicator board.
用于继电器箱与多个警报指示柱，警报指示器板间的连接。
3
In multiple-channel scanning thermometrical system, the change of connecting resistance of tongue relay is the main factor which influences the system precision.