无线电报

The ship used radiotelegraphy to send distress signals.
这艘船使用无线电报发送求救信号。
He learned radiotelegraphy during his time in the navy.
他在海军服役期间学习了无线电报技术。
Radiotelegraphy played a crucial role in early aviation communication.
早期航空通信中，无线电报扮演了至关重要的角色。
The radiotelegraph operator transmitted messages in Morse code.
无线电报员用摩尔斯电码发送信息。
The radio beacon relied on radiotelegraphy to guide lost aircraft.
那个无线电信标依靠无线电报来引导迷路的飞机。
They maintained contact through radiotelegraphy throughout the expedition.
在整个探险过程中，他们通过无线电报保持联系。
The invention of radiotelegraphy revolutionized long-distance communication.
无线电报的发明彻底改变了远程通讯方式。
The radiotelegraph station was vital for coordinating rescue efforts.
无线电报站对于协调救援工作至关重要。
During World War II, radiotelegraphy was extensively used for military communications.
第二次世界大战期间，无线电报被广泛用于军事通信。
The old radiotelegraph machine had been replaced by modern satellite communication systems.
古老的无线电报机已经被现代卫星通信系统所取代。