locking spring screw

例句：

1. 1. The locking mechanism on thedoor is very secure.
   门上的锁定机制非常安全。
2. 2. The car's engine needsto be tightened with a lockingspring screw.
   汽车引擎需要用锁紧弹簧螺丝来拧紧。
3. 3. Thetechnician used a lockingspring screw to fix the brokenwindow.
   技术员用一个锁紧弹簧螺丝来修理破碎的窗户。