切换技术是UMTS关键技术之一，它是保证用户在移动通信网络中具有移动性的必不可少的方法。
Handover technology is the key technology in UMTS, and it is absolutely necessarily in guaranteeing the subscribers moving freely in mobile communication system.
切换技术是UMTS关键技术之一，它是保证用户在移动通信网络中具有移动性的必不可少的方法。
Handover technology is the key technology in UMTS, and it is absolutely necessarily in guaranteeing the subscribers moving freely in mobile communication system.
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