| 释义 |
extremely low frequency
extremely low frequencyn. Abbr. ELF A radio frequency below 300 hertz.extremely low frequency n (General Physics) a radio frequency or radio-frequency band below 3 kilohertz. Abbreviation: ELF extreme′ly low′ fre′quency
n. any radio frequency between 30 and 300 hertz. Abbr.: ELF [1965–70] Thesaurus| Noun | 1. | extremely low frequency - below 3 kilohertzELFradio frequency - an electromagnetic wave frequency between audio and infraredelectromagnetic spectrum - the entire frequency range of electromagnetic waves |
extremely low frequency
extremely low frequency[ek′strēm·lē ′lō ′frē·kwən·sē] (communications) A frequency below 300 hertz in the radio spectrum. Appreviated ELF. AcronymsSeeELFextremely low frequency
Related to extremely low frequency: very low frequencySynonyms for extremely low frequencynoun below 3 kilohertzSynonymsRelated Words- radio frequency
- electromagnetic spectrum
|