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。

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Similarly, some sensors already make more efficient use of another scarce resource: radio spectrum.

与之相似的是，某些传感器已在更高效地利用另一种稀有来源——射电谱。

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They will, he adds, be efficient and capable of producing a spectrum of light similar to natural daylight with an operating life of around 10,000 hours.

他还说，这些使用寿命高达大约10000小时的OLEDs将会是高效率的，且有能力创造出与自然光相类似的光谱。

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To cope with the data tsunami Ofcom has drawn up plans to release more radio spectrum and make the industry's use of existing spectrum more efficient.

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Reallocation of spectrum will maximize the efficient use of the nation's spectrum resources.

WSJ: Should Some of Broadcasters' Spectrum Be Auctioned Off to Wireless Carriers?

Other U.S. carriers have been forced to leverage less efficient spectrum for their network upgrades.

FORBES: Verizon To Up 4G Battle With 'Fastest, Most Advanced' Network Launch On Dec. 5