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Dictionary

scan'ning elec'tron mi"croscope

a device in which the specimen is examined point by point directly in a moving electron beam, and electrons reflected by the specimen are used to form a magnified, three-dimensional image on a television screen. Abbr.: SEM

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

scanning disk

scanning line

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