belt tightening pulley

例句：

1. 1. The belt tightening pulley isessential for maintaining the proper tension on thecar's belts.
   皮带张紧轮对于保持汽车皮带的适当张力至关重要。
2. 2.The mechanic used a belt tightening pulley to adjust the tension of the enginebelts.
   机械师使用皮带张紧轮来调整发动机皮带的张力。
3. 3. The belttightening pulley was designed to preventthe belts from slipping and causingdamage to the engine.
   皮带张紧轮被设计用来防止皮带滑动并避免对引擎造成损害。