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单词 ghost image
释义 ghost image
[`gōst ´im·ij]
ELECTRONICS
1. An undesired duplicate image near the desired image on a television receiver or computer display screen.
2. See <<ghost pulse>>
OPTICS
An undesired image appearing at the image plane of an optical system; it may be a false image of the object or an out-of-focus image of a bright source of light in the field of the optical system.
SPECTROSCOPY
A false image of a spectral line produced by irregularities in the ruling of a diffraction grating.
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