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坐高铁手机没信号？原因远比你想的要复杂！
source link: https://news.cnblogs.com/n/604596/
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众所周知，我们国家有目前世界上最发达的高速铁路网络。高铁，拉近了城市之间的时间距离，彻底改变了我们的生活。可是，高铁千好万好，有一点却始终困扰着乘客，那就是高铁上面的手机信号难题。乘坐高铁的时候，漫漫旅途，寂寞难耐，你一定会掏出手机，以此来打发时间。不过，你经常会发现，手机信号很不稳定，时好时
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