alarm bolt friction spring

例句：

1. 1.The alarm bolt was the first thing that caught my attention when I arrived at the house.
   当我到达房子时，警报螺栓是首先引起我注意的东西。
2. 2. The friction spring in the car's suspension system is crucial for smooth operation.
   汽车悬挂系统中的摩擦弹簧对平稳运行至关重要。
3. 3.The engineer had to adjust the tension of the bolt and the friction between the spring and the frame.
   工程师不得不调整螺栓的张力和弹簧与框架之间的摩擦力。