The spectral compressor compresses a pre-selected portion of the high frequency band and maps the compressed high frequency band to a lower band limited frequency range.

频谱压缩器压缩高频频带的预选择部分，并将压缩的高频频带映射到较低的有限带宽频率范围。

youdao

In general, a move toward the upper band can often suggest that the asset is becoming overbought, while a move close to the lower band can suggest the asset is becoming oversold.

通常，向上部布林线移动经常意味这个资产将会被超买，向下部布林线移动则意味将会被超卖。

youdao

The extra electron fills up the lower-energy state in the conduction band, causing excited electrons to, effectively, spill over into the higher-energy, photon-emitting state.

这个额外的电子填充了传导带的较低能级，有效的导致了被激发的电子溢入较高，释放光子的能级。

youdao

And,U2's manager says the band has worked hard to make sure tickets are lower in cost than in the past so that fans can afford to attend the shows.

VOA: special.2009.04.10

This frequency is close to the lower band of the highest radio frequency band known as extremely high frequency which goes from 30 to 300 GHZ.

FORBES: Samsung's New 5G Breakthrough Points To Long Term Risks For Apple

On four previous occasions, the Nasdaq 100 closed below its lower band for five straight days and always yielded to rallies averaging a gain of 2.6%, says Goepfert.

FORBES: Magazine Article

Charged at just the same as other beers of course, despite just squeaking into that much lower duty band.

FORBES: Watering the Workers' Beer