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单词 compact disk
释义 compact disk
[`käm´pakt `disk]
COMMUNICATIONS
A nonmagnetic disk, usually 43/4 inches (12 centimeters) in diameter, used for audio or video recording or for data storage; information is recorded using a laser beam to burn microscopic pits into the surface and is accessed by means of a lower-power laser to sense the presence or absence of pits.
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