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单词
scanning disk
释义
WordReference Random House Unabridged Dictionary of American English © 2024
scan
′
ning disk′,
[
Television.
]
Radio and Television
(in mechanical scanning) a disk with a line of holes spiraling in from its edge, rotated in front of a surface so as to expose a small segment as each hole passes before it for transmitting or reproducing a picture.
1925–30
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更新时间:2026/8/13 6:29:10