radio-frequency spectrum

the electromagnetic/radio/sound spectrum

电磁波谱；射频频谱；声谱

Bosses bemoaned the downturn and demanded free radio spectrum to stimulate the industry.

大佬们唉叹业绩下滑,要求免费的频谱来刺激行业的发展.

Aiming at improving the spectrum utilization efficiency via employing the cognitive radio technology into practical communication, the communication system in this paper can make better use of the spectrum resources with some tolerable loss of communication efficiency.

本系统凸显了认知无线电理论运用于实际通信中对频谱利用率的提升，使系统内的用户能够在损失少量通信实时性的情况下高效地利用频谱资源。

Spread spectrum technology competes in the unregulated portion of the radio electromagnetic spectrum.

扩频技术是在无线电电磁频谱中无条例管制的部分中竞争.

Vast amounts of energy, from X-rays right through the spectrum down to radio waves, are escaping into space.

大量的能量，从X光直到无线电电波，都正被泄露到太空中去。

Cognitive radio also has a very important technology: spectrum sharing technology.

认知无线电中还有一个很重要的技术：频谱共享技术。

Vast amounts of energy, from X-rays right through the spectrum down to radio waves, are escaping into space

大量的能量，从X光直到无线电电波，都正被泄露到太空中去。

Vast amounts of energy, from X-rays right through the spectrum down to radio waves, are escaping into space...

大量的能量，从 X 光直到无线电电波，都正被泄露到太空中去。

The Solar Radio Patrol Network of USAF and the Examination of Prediction Accuracy of the U-Shaped Radio Spectrum for Cycle 21

USAF太阳射电全球巡视网及其第21太阳活动周U-型谱预报精度的检验