lower swing hanger pivot

例句：

1. 1. The lower swing hanger is used to adjust the angle of the swing chair.
   下摆摆动器用于调整摇椅的角度。
2. 2. The lower swing pivot allows for easy adjustment of the swing's position.
   下摆枢轴使得摇椅位置的调整变得简单。
3. 3. The lower swing rod is crucial for maintaining the balance of the swing.
   下摆杆对于保持摇椅平衡至关重要。