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单词 pincushion distortion
释义 pincushion distortion
[`pin´ku̇sh·ǝn di´stȯr·shǝn]
ELECTRONICS
Distortion in which all four sides of a received television picture are concave (curving inward).
OPTICS
Aberration in which the magnification produced by an optical system increases with the distance of the object point from the optical axis, so that the image of a square has concave sides.
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