[视频]我国首次成功实现4K超高清电视5G网络传输测试
2019-01-15 11:36:02 [稿源：央视新闻] [编辑：陈啸鼎]
[视频]我国首次成功实现4K超高清电视5G网络传输测试
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[视频]我国首次成功实现4K超高清电视5G网络传输测试
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