dial switch bridge

例句：

1. 1. The dial switch bridge isa critical component of the communication system.
   拨号开关桥是通信系统的关键组成部分。
2. 2. The dialswitch bridge was designed to improve signal strengthand reliability.
   拨号开关桥的设计旨在提高信号强度和可靠性。
3. 3. The dial switch bridge isresponsible for connecting different telephone networks.
   拨号开关桥负责连接不同的电话网络。