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单词 overcoil
释义

WordReference Random House Unabridged Dictionary of American English © 2024
o•ver•coil  vər koil′),USA pronunciation n. [Horol.]
  1. a fixed end of a spiral hairspring, consisting of an upwardly and inwardly bent continuation of the outermost coil of the spring: used to offset the asymmetry of the common spiral spring when tight, which impairs isochronism.
  2. a hairspring having such a fixed end.
  • over- + coil1 1880–85

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