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光纤光缆cables代替history | 邮电通讯系统 2022-08-05 50 0star收藏 版权: . 保留作者信息 . 禁止商业使用 . 禁止修改作品
光缆通讯在已有20多年的使用前史,这段前史也便是光通讯技术的发展史和光纤光缆的发展史。光纤光缆在我国的发展可以分为这样几个期间:对光缆可用性的评论;代替市内局间中继线的市话电缆和pcm电缆;代替有线通讯干线上的高频对称电缆和同轴电缆。这两个代替应当说是实现了;现正在代替接入网的主

(Optical cable communication has a history of more than 20 years of use, and this history is also the development history of optical communication technology and the development history of optical fiber and cable. The development of fiber optic cables in my country can be divided into the following periods: comments on the availability of fiber optic cables; local telephone cables and pcm cables that replace inter-office trunks in cities; high-frequency symmetrical cables and coaxial cables that replace wired communication trunks. These two replacements should be said to have been realized; they are now replacing the main)

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