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单词 guard pin
释义

WordReference Random House Unabridged Dictionary of American English © 2024
guard pin′, [Horol.]
  1. Time(in a lever escapement) a pin on the lever, meeting the safety roller in such a way as to prevent the lever from overbanking. See diag. under lever escapement. 
  • 1875–80

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更新时间:2025/7/23 15:26:25