The present shortage of radio spectrum results in large part from the cost and performance limits of legacy hardware established during the past century.
The present shortage of radio spectrum results in large part from the cost and performance limits of legacy hardware established during the past century.
目前无线电频谱壅塞的现象，大多起因于上个世纪制造的老式硬体设备在成本与效能上受到限制。