... radio-frequency band 无线电频带 radio-frequency bandwidth 射频带宽度 radio-frequency beam 射频波束 ...
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扩频通信的射频信号频带宽度，可扩展到信息信号频带宽度的数倍乃至数千倍。
The band width of the radio-frequency signal for the spread spectrum communication can be spreaded to several times or even thousands of times the band width of the information signal.
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