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hairspring 【機械工程】游絲;細彈簧。

hairstreak

Breguet hairspring stud 挑框游絲外樁

Breguet hairspring collet 挑框游絲內樁

Balance cock for flat hairspring 扁平擺夾板游絲

Hairspring for aviation instruments 航空儀表用游絲

Hairsprings for mechanical instruments 機械儀表用游絲

Hairsprings for watches and clocks ; code - numbers 鐘表的游絲.代碼