LF

Học thuật
Thân thiện
Definition
  1. Noun:
    • Low frequency: "lf" is an abbreviation for "low frequency," specifically referring to radio frequencies in the range of 30 to 300 kilohertz.
Usage
  • The term "lf" is primarily used as a technical abbreviation in the fields of telecommunications, radio broadcasting, and engineering. It is a standard designation within the radio spectrum.
Examples of Usage
  • Noun:
    • The submarine communication system operates on the lf band.
    • Long-range navigation signals are often transmitted using lf waves.
Advanced Usage
  • "lf band": refers to the specific range of low-frequency radio waves.
    • The lf band is known for its ability to propagate over long distances and penetrate water and soil.
Variants and Related Words
  • Low frequency (LF): The full term for which "lf" is the abbreviation.
  • Very low frequency (VLF): The frequency band below LF (3 to 30 kHz).
  • Medium frequency (MF): The frequency band above LF (300 kHz to 3 MHz).
Synonyms
  • Low-frequency band: A descriptive synonym for the "lf" range.
Related Phrases
  • "lf radio": radio equipment or communication using low frequencies.
    • The lighthouse uses an lf radio beacon for navigation.
  • "lf spectrum": the portion of the electromagnetic spectrum occupied by low frequencies.
    • Regulations govern the use of the lf spectrum for various services.
Noun
  1. 30 to 300 kilohertz

Từ đồng nghĩa

Từ gần giống

Từ chứa "LF"