资料来源 : pyDict

细弹簧,游丝

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Hairspring \Hair"spring`\, n. (Horology)
   The slender recoil spring which regulates the motion of the
   balance in a timepiece.

资料来源 : WordNet®

hairspring
     n : a fine spiral spring that regulates the movement of the
         balance wheel in a timepiece