overcoil.
/oh-ver-koil/US // ˈoʊ vərˌkɔɪl //
过线圈,过卷,过盘,过度盘绕
Definitions
n.noun · 名词
- 1.
Horology.
- ›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.
- ›a hairspring having such a fixed end.
Examples
Used in chronometers and other fine time pieces where the spring is an overcoil.
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