hairspring
英[\'heəsprɪŋ]
美[\'hersprɪŋ]
基本释义
- n.
- 细弹簧，游丝
实用例句
When have I ever left a mark as tiny as a hairspring?
我何曾留着像游丝样的痕迹呢?
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英英释义
Noun
1. a fine spiral spring that regulates the movement of the balance wheel in a timepiece