belt roller

• 皮辊,皮滚筒,皮带轮

belt roller的用法和样例：

例句

1. The belt started wrapping up on the tractor pulley.
   皮带开始绕在拖拉机的皮带轮上。
2. Some experiments revealed that the electric motor might be a little weak for this purpose, but I still can try a smaller belt pulley.
   一些实验表明电动机可能有点弱为此目的，但我仍然可以尝试较小皮带轮。