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美国电信运营商AT&T:今年底将正式推出5G服务
source link: http://tech.sina.com.cn/t/2018-01-04/doc-ifyqkarr7105769.shtml?amp%3Butm_medium=referral
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美国电信运营商AT&T:今年底将正式推出5G服务
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