telegraph relay
常见例句
- Among these were a relay booster for telegraph lines and a fire-safety curtain for theaters.
其中包括電報線路的繼電調壓器和劇院防火簾。 - Devices such as the telegraph and telephone relay messages by creating modulated electrical impulses, or impulses that change in a systematic way.
電報機與電話機等設備，通過産生調制電脈沖或以系統化方式變化的脈沖，來傳遞信息。 - He was the author of a number of discoveries relating to the telegraph industry, including a self-adjusting relay that solved the problem of circuits sticking open or shut, and a telegraph printer—a precursor of what was later called the Teletype machine.
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