near field

短语

[电] 近场

词形变化

near fields 复数

别名

near-field

释义与例句

n.
  1. 1.

    The region within a distance a fraction of a wavelength from a sound source. Accordingly, the outer boundary of the near-field region is closer for high-pitched sound than for low-pitched sound.

  2. 2.

    The region within about half a wavelength from an electrically small antenna. More specifically it is the region within the radiansphere.

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