crusher rolls

例句：

1. 1. The crusher rolls are essential for crushing the ore.
   破碎机辊子对于破碎矿石至关重要。
2. 2. The rollers on the conveyor belt are designed to reduce friction and improve efficiency.
   传送带上的辊子设计用来减少摩擦并提高效率。
3. 3.The rollers in the machine are made of high-quality steel, ensuring long service life.
   机器中的辊子由优质钢材制成，确保了长使用寿命。