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- radio telegraphic transmission 无线电报发送
- A radio telegraph or radiotelephone system. 无线电报系统，无线电话系统
- In 1906, the "SOS" distress signal was adopted at the International Radio Telegraphic Convention in Berlin. 1906年，在柏林举行的国际无线电通信大会上采用了SOS遇难信号。
- One of the intervals during the telegraphic transmission of a message when the key is open or not in contact. 空号当关键码被打开或没接上时电报传送信息的间隔
- The forming of signals, such as those employed in telegraph transmission, by the interruption of a direct current or modulation of a carrier between discrete values of some characteristics. 断开或接通直流电路或者在具有某些特点的离散值之间对载波进行调制而形成信号的过程和方法。如电报传输中使用的就是键控法。
- The forming of signals,such as those employed in telegraph transmission,by the interruption of a direct current or modulation of a carrier between discrete values of some characteristics. 断开或接通直流电路或者在具有某些特点的离散值之间对载波进行调制而形成信号的过程和方法。如电报传输中使用的就是键控法。
- single channel radio telegraph system 单路无线电报系统
- domestic radio telegraph station 国内无线电信局
- passenger ship radio telegraph band 客轮所用无线电频带
- several telegraphic transmission motors 多台电动机
- the International Radio Telegraph Statio 国际无线电信局
- self-oscillator radio telegraph transmitter 自激振荡器式发报机
- international radio telegraph station 国际无线电报站
- inverse neutral telegraph transmission [信]极性电报传输
- high-speed telegraph transmission 快速电报传输
- automatic telegraph transmission 自动电报传输
- A transistorize radio takes no time to warm up. 晶体管收音机不需要预热时间。
- Radio Beijing sends the news all over the world. 北京广播电台向全世界播送新闻。
- He sent me the news by wireless telegraph. 他用无线电报把消息告诉我。
- She petitioned her neighbor to turn down the radio. 她请求邻居把收音机关小点声。
