dual spring

例句：

1. 1. The new car has a dual-spring suspension system that provides excellent handling.
   这款新车拥有一个双弹簧悬挂系统，提供卓越的操控性能。
2. 2.In the old days, dual springs were used to stabilize heavy loads on boats.
   在旧时代，双弹簧被用来稳定船只上的重物。
3. 3. The dual springs in the door hinges allow for smooth opening and closing without any resistance.
   车门铰链中的双弹簧使得开关门时平滑无阻。