door spring lock

例句：

1. 1. The door spring lock is a crucial component of the security system.
   门弹簧锁是安全系统的关键组成部分。
2. 2.The door spring lock was designed to prevent unauthorized access.
   门弹簧锁被设计用来防止未经授权的进入。
3. 3. The door spring lock failed to engage properly, causing the door to stick.
   门弹簧锁没有正确连接，导致门卡住。