hair·spring 
(hârsprĭng′)
(hârsprĭng′)n.
A fine coiled spring that regulates the movement of the balance wheel in a watch or clock.
| 单词 | hairspring |
| 释义 | hair·spring (hârsprĭng′)n. A fine coiled spring that regulates the movement of the balance wheel in a watch or clock. |
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