coefficient of friction

例句：

1. 1. The car's brakes are designed to have ahigh coefficient of friction for better stopping power.
   汽车的刹车设计有较高的摩擦系数，以获得更好的制动效果。
2. 2. The coefficientof friction between the two surfaces is crucialin determining how well they will slide overeach other.
   两个表面之间的摩擦系数对于它们能否顺利滑动至关重要。
3. 3. Theengineer used a special materialwith a low coefficient of frictionto reduce wear and improve efficiency.
   工程师使用了一种特殊的材料，其摩擦系数低，以减少磨损并提高效率。