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| 单词 | overcoil |
| 释义 | overcoil in American English (ˈouvərˌkɔil) noun Horology 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 Word origin [1880–85; over- + coil1] |
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