backlash spring

例句：

1. 1. The car's suspension system has a backlash spring to absorb impacts.
   汽车的悬挂系统有一个回弹弹簧来吸收冲击。
2. 2.The new design uses a more efficient backlash spring for improved performance.
   新设计使用了更高效的回弹弹簧以提升性能。
3. 3.The engineer tested the backlash spring to ensure it would not fail during heavy use.
   工程师测试了回弹弹簧以确保在重使用中不会失效。