hairspring是什么意思？

hairspring

英['heəsprɪŋ] 美['hersprɪŋ]

• n. 细弹簧，游丝；

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?

英英词典释义

• Noun
  1. a fine spiral spring that regulates the movement of the balance wheel in a timepiece