extremely low frequency

基本解釋

This falls in the extremely low frequency (ELF) range which includes frequencies up to 300 Hz.
這種頻率屬于極低頻的頻率范圍內(nèi)，通常極低頻的頻帶范圍也在300Hz以下。
The important frequencies for stimulating tissue repair are all in the biologically important extremely low frequency (ELF) range.
為促進組織修復的重要頻率在生物的重要極低頻所有（低頻）的范圍。
These are quasi-standing extremely low frequency (ELF) waves that naturally exist in the earth′s 'electromagnetic′ cavity, the space between the ground and the ionosphere.
這些是天然地存在于地球的“電磁”空腔——地面和電離層之間的空間中的極低頻（ELF）準駐波。
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More specifically, researchers have been interested in the link, if any, between the extremely low frequency magnetic fields generated by these lines and childhood leukaemia.
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The sensors work by detecting extremely low-frequency electrical activity over a distance of 5 microns (one micron being equal to one millionth of a metre).
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