The Pony Express lasted only eighteen months. It was no longer needed after a telegraph line was completed to San Francisco.
快马邮递一直持续了18个月，当第一条电报线路铺到旧金山后，就不再需要快马邮递了。
First telegraph company offices opens. Boston and New York first joined by a telegraph line. Birth of Alexander Graham Bell, Edinburgh, Scotland.
第一家电报局成立。波士顿和纽约第一次通过一根电报线联系起来。苏格兰爱丁堡人，亚历山大。格雷厄姆。贝尔出生。
The relationship between the two inventors led to a partially implemented scheme to install a telegraph line from the New York Merchant's Exchange to Sandy Hook, New Jersey.
基于这两位发明家之间的关系，他们部分实现了在纽约商品交易和新泽西的桑迪·胡克(Sandy Hook)之间架设电报线的计划。
In 1870 a man named Charles Todd built a repeater station here, to join two massive segments of Australia's first overland telegraph line.
1870年一个名叫CharlesTodd的人在这里建立了一个加入澳大利亚的第一大段陆上的两条电报线的中继站。
On the second trip of the afternoon he ran into a crowd about half way along the line, that had blocked the car's progress with an old telegraph pole.
他下午第二次出车时，开到半路遇到了一群人，他们用一根旧电线杆挡住了电车的去路。
Telegraph equations, can be looked as cascade connection of two-port network of lumped circuit of transmission line, is a hyperbolic partial differential equations.
传输线可以看作集中参数二端口网络的级联，其数学模型—电报方程是一阶双曲型偏微分方程组。
Telegraph equations, can be looked as cascade connection of two-port network of lumped circuit of transmission line, is a hyperbolic partial differential equations.
传输线可以看作集中参数二端口网络的级联，其数学模型—电报方程是一阶双曲型偏微分方程组。
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