| 单词 | vlf |
| 释义 | > as lemmasVLF VLF n. very low frequency: applied to radio waves with a frequency between 10 and 30 kHz. ΘΚΠ society > communication > telecommunication > radio communications > [noun] > radio wave > specific frequencies very high and low frequency1488 VHF1932 UHF1937 VLF1938 S.H.F.1948 VOR1955 1938 Admiralty Handbk. Wireless Telegr. 1938 I. Nomenclature of Waves On the basis of a recent C.C.I.R. recommendation, promulgated in French; a suitable nomenclature, likely soon to be accepted internationally, may be given in English as follows:—Below 30 kc/s... Very Low Frequencies (V.L./F.). 1962 L. Deighton Ipcress File xx. 136 There was a V.L.F. (very low frequency) radio wave-length and a compass bearing. 1983 New Scientist 13 Jan. 93/1 Scientists in California have discovered that the Earth's magnetic field can act as a giant neutral amplifier for very low-frequency (VLF) radio waves. < as lemmas |
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