pedal protractor muscle

例句：

1. 1.The pedal protractor muscle is an important part of the bicycle's suspension system.
   踏板延长器肌肉是自行车悬挂系统的重要组成部分。
2. 2.The pedal protractor muscle helps to absorb shock and provide smoother riding.
   踏板延长器肌肉有助于吸收冲击并提供更平稳的骑行体验。
3. 3. The pedal protractor muscle is responsible for extending the bike's suspension travel.
   踏板延长器肌肉负责延伸自行车的悬挂行程。