求翻译：之后，专用移动通信系统不断发展，逐渐形成了多频道、单基地台的通信系统，这样就可以利用多频道提供话音及非话音业务，且功能相应增多。在引入多频道并且使之能够共享以后，集群通信的概念就诞生了，即采用多频道共享的单基地台或多基地台的通信系统。是什么意思？

After the continuous development of private mobile communication system, and gradually formed a multi-channel, single base station communication system, so that you can use multiple channels to provide voice and non voice services, and capabilities increase. The introduction of multi-channel and so

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