telegraphy

基本解释

He experimented for years in his own laboratory, and while he was still a young man, he invented wireless telegraphy.
他在他自己的实验室里成年累月的作实验，之后，当他还是个年轻人的时候，他发明了无线电报。
The electrification of Europe and America in the late 19th century sparked the use of storage batteries for telegraphy, portable electric-lighting systems and back-up power.
在19世纪晚期，欧洲和美国的电气化进程开始将蓄电池大规模用于电信技术、便携式电灯系统和后备电源。
"Duplex" as well asshavingsthe general meaning of "two-fold" applies in the jargon of electrical telegraphy to "systems in which messages are sent simultaneously in opposite directions"(OED).
因此，在转动的地球上发生两人路线交汇的这一静止点，除了这一“复式”(duplex)故事的叙述者外不会再有其他人注意。 “duplex”一词通常的意思是“双重的”，在电信术语里，它表示“信息从两头同时向对方传递的系统”(见《牛津英语词典》)。
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Among others,he experimented with the idea of telegraphy C sending messages over a wire by electricity.
Among others,he experimented with the idea of telegraphy - sending messages over a wire by electricity.

The date emphasises the role of radio (telegraphy) in saving the lives of many passengers.
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Telegraphy had military uses, and created a worldwide news and financial trading industry, speeding pride in global empires.
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the use of communication systems that work by sending electric signals through wires or by radio waves

a system of telecommunications involving any process providing reproduction at a distance of written, printed, or pictorial matter &rarrsee also facsimile