与传统的模拟集群移动通信系统相比，TETRA具有更高的频谱利用率，提供更广泛的业务服务。
Compared with the traditional analog trunked ra-dio, TETRA is more spectrum efficient and can provide extensive services.
与传统的模拟集群移动通信系统相比，TETRA具有更高的频谱利用率，提供更广泛的业务服务。
Compared with the traditional analog trunked ra-dio, TETRA is more spectrum efficient and can provide extensive services.
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