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Each S5 repeats the wireless signal from the first one, rebroadcasting the music up to 100 feet at a time.

每个S5重复第一个S5的无线信号，将音乐通过无线电传播传送到100英尺的范围之内。

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To overcome the lack of real-time monitoring of current railway cab-signal system, a new approach based on GPRS wireless access technology is proposed.

针对目前铁路机车信号系统监测存在实时性差的缺点，提出了一种基于GPRS无线网络的监测方法。

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