wireless telegraphy board

例句：

1. 1.The wireless telegraphy board is used to transmit signals over long distances.
   无线电报板用于远距离传输信号。
2. 2. This new model of wireless telegraphy board has improved its range and speed.
   这款新型无线电报机的射程和速度都有所提高。
3. 3.The engineers were busy setting up the wireless telegraphy board at the construction site.
   工程师们忙于在施工现场设置无线电报机。