relay semiautomatic block

例句：

1. 1. The relay system is designed to ensure the smooth transmission of signals from one station to another.
   接力系统设计用来确保信号从一个站点平滑地传输到另一个站点。
2. 2. The semi-automatic block was developed to improve efficiency in manufacturing processes.
   半自动块的开发是为了提高制造过程的效率。
3. 3. The relay block is responsible for receiving and transmitting data between different devices.
   接力块负责接收和在不同设备之间传输数据。