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Fromswitching器件to | 邮电通讯系统 2022-08-03 61 0star收藏 版权: . 保留作者信息 . 禁止商业使用 . 禁止修改作品
手机五大器件介绍从有线到无线,从窄带到宽带,从远距到近距,从模拟到数字,从电路交换到分组交换,从1G/2G/2.5G/2.75G到3G/3.5G乃至4G......通讯技术一往无前地进行着改造。

(Introduction of the five major components of mobile phones From wired to wireless, from narrow to broadband, from long distance to short distance, from analog to digital, from circuit switching to packet switching, from 1G/2G/2.5G/2.75G to 3G/3.5G and even 4G ...communication technology is reinventing itself like never before.)

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