| 单词 | ILF (InfraLow Frequency) |
| 释义 | ILF (InfraLow Frequency) ILF radio is in the frequency range of 300–3000 Hz (3 kHz) and has a wavelength of 1,000–100 km. ILF radio has no contemporary telecommunications applications. See also electromagnetic spectrum, frequency, Hz, and wavelength. |
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