无线电报设备安全证书 Safety radio-telegraphy certificate ; telegraphy certificate
无线电报设备合格证书 radiotelegraph certificate
备用无线电报设备 reserve radiotelegraph installation
很快，人们开始使用无线电报公司的设备进行远程发射和接收无线电讯息。
Very quickly, people began sending and receiving radio messages across long distances using equipment made by Marconi's company.
航海的舰船需要这种设备，在无线电报发明之前，他们与陆地间没有任何通讯，除非抵达了港口。
Ships at sea needed the device. Before Marconi's invention, they had no communication until they arrived in port.
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