As a small example, most consumer headphones offer a frequency response somewhere in the region of 60 - 20, 000 kHz.

ENGADGET

It could also tailor its delivery frequency to the demand for home delivery in a particular region.

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Then we look at more nebulous attributes, such as country of registration, past utilization (types of flights, average lengths of flights and frequency of use), corrosion potential based on the region where it was based, importation costs and regulatory compliance, to name a few.

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