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单词 rack spring
释义

Definition of rack spring in English:

rack spring

noun
  • A spring attached to a rack in a mechanical device, especially the movement of a clock.

Origin

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

Definition of rack spring in US English:

rack spring

noun
  • A spring attached to a rack in a mechanical device, especially the movement of a clock.

Origin

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

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