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电报发展史
larissaeqnc430520
- 52 minutes ago
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电报起源于19世纪中叶,最初作为一种远距离通信方式,极大地影响了当时的社会结构。早期的电报系统依赖于莫尔斯电码进行信息编码,并由训练有素的操作员进行??
https://murrayaimj493706.nytechwiki.com/user
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