Abstract: : 4g refers to the fourth generation mobile communication technology.
摘要：4g指的是第四代移动通信技术。
In telecommunications, 4g is the fourth generation of mobile phone mobile communication technology standards.
在电信中，4g是手机的移动通信技术标准的第四代。
The fourth generation of the mobile communication systems are characterized by the heterogeneous access networks and IP-based transport technologies.
第四代移动通讯系统的特点是：多种接入网络和基于IP的传输技术。
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