constantforce spring

例句：

1. 1. The constant force spring is responsible for the smooth operation of the device.
   这个常力弹簧负责设备平稳运行。
2. 2. The constant force spring helps to maintain the balance of the system.
   常力弹簧有助于保持系统的平衡。
3. 3. The constant force spring was designed to provide a stable and reliable solution for this problem.
   常力弹簧被设计用来为这个问题提供稳定可靠的解决方案。