The microwave spectrum ranges from several hundred MHz to dozens of GHz which were allocated originally by the National Radio Regulatory Commission in China.

从数百兆赫到数十千兆赫的微波频谱，全国无线电管理委员会曾有大致的分配。

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The man-made sort can do things like transmit music or heat food in a microwave. At the low end of the spectrum are the frequencies used for things like television and mobile phones.

人造无线电波有多种用途，如传送音乐或者运用微波加热食物，频谱低端的频率可以使用在诸如电视和移动电话等设备上。

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This is no small thing; the standard for Wi-Fi was developed on unlicensed spectrum that had been considered "junk band", cluttered with low-intensity signals from microwave ovens and baby monitors.

这不是一件小事；短距离无线保真频率是无牌普，曾经被认为是“垃圾频率”，短距离无线通讯充满了从微波炉和婴儿监视器里收集到杂乱的低强度信号。

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At the risk of oversimplifying, this is the lack of noticeably non-random fluctuations in the cosmic microwave background spectrum measured by Planck.

FORBES: Cosmic Inflation Model Gets A Boost From Planck Data

The new work focuses instead on cold, dense masses of gas that have markedly less random motion, and which emit their radiation in the microwave part of the electromagnetic spectrum.

BBC: Supermassive black hole weighed using new scale

Wi-Fi exploits the spectrum used by such gadgets as cordless telephones and microwave ovens--airwaves that haven't been auctioned or allocated to an exclusive user.

FORBES: Magazine Article