- back-moving spring
- stretched ring
- stretched spring
- 拉紧: cocking; tensioning; straini ...
- 弹簧: spring; mechanical spring
- 拉紧弹簧装置: tension spring assembly
- 还张紧弹簧: ringspannfeder ring-clamspring washer/ring-clamlock washer
- 夹紧弹簧: verspannfeder spring lock washer
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