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单词
breguet hairspring
释义
bre·guet hairspring
\brəˈgā-\
noun
Usage:
usually capitalized B
Etymology:
after Abraham L.
Bréguet
died 1823 French horologist
:
a flat spiral hairspring whose last outer coil is raised and curved back to a point near the center
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更新时间:2025/11/4 20:38:12