upper buffer spring

例句：

1. 1. The car's suspension system uses a combination of upper buffer springs to improve ride comfort.
   汽车的悬挂系统使用上缓冲弹簧的组合来提高乘坐舒适性。
2. 2.During the construction phase, engineers carefully installed upper buffer springs to ensure proper functioning.
   在施工阶段，工程师们仔细安装上缓冲弹簧以确保正常工作。
3. 3. The upper buffer spring is designed to absorb shock and provide a smoother ride for passengers.
   上缓冲弹簧设计用来吸收冲击并提供乘客更平稳的乘坐体验。