在美国，由私人企业（private enterprise）掌握着电报系统（telegraph system）。很多私人商务行为都用电报来联系的，而且很多用电报来联系的私人企业都是垄断企业（monopoly）。
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voice-frequency telegraph system [通信] 音频电报系统 ; 音频设施终端机
carrier telegraph system 载波电报方式 ; [通信] 载波电报系统
optical telegraph system [通信] 光电报系统
AC telegraph system 交流电报系统
electronic telegraph system 电报系统 ; [通信] 电子式电报系统
wired telegraph system [通信] 有线电报系统
error-correcting telegraph system [通信] 纠错电报系统 ; 改错电报系统
four tone telegraph system 四音电报系统
quadruplex telegraph system 四路传输电报制
Another is that the nonlinear term may be singular, we also consider the existence of double periodic positive solution of the singular telegraph system.
另一是非线性项具有奇性,我们也给出了这类被称为奇异电报方程组的双周期正解的存在性。
参考来源 - 电报方程组双周期正解问题·2,447,543篇论文数据，部分数据来源于NoteExpress
I also own a piece of copper wire that was used 160 years ago as a conductor for the original Morse telegraph system.
我还有一根铜丝，那是160年前最早的摩尔斯电报系统曾用过的导体。
Even by the end of the 19th century, however, new technologies began to emerge, many of them based on the same principles first developed for the telegraph system.
虽然到了19世纪末新的科学技术开始崛起，但是许多技术都是基于与最初发明电报同样的原理。
Initially, the code, when transmitted over the telegraph system, was rendered as marks on a piece of paper that the telegraph operator would then translate back into English.
最初通过电报系统传送信息是将电码抄在纸上，然后由电报员将其翻译成英语来完成。
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