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单词 great wheel
释义

great wheel

noun
1An exceptionally large wheel, especially one in a piece of apparatus.
2 Watchmaking and Clockmaking the first wheel in the train; specifically a cogged wheel at the foot of a fusee, of slightly larger diameter than the adjacent largest step of the fusee.

Origin

Early 16th century; earliest use found in Stephen Hawes (b. c1474), poet.

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更新时间:2024/11/11 17:02:20