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单词 pattern wheel
释义

pattern wheel

noun
1 Weaving = pattern cylinder; (also) a revolving wheel in a warp knitting machine consisting of sectors of different radii which move the guide bar back and forth.
2A circular plate in a clock having notches round the edge which determine the pattern of striking.
3A toothed wheel which is rolled along a surface to mark out a pattern of dotted lines.

Origin

Mid 19th century; earliest use found in Scientific American.

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更新时间:2024/11/13 16:56:32