n.滑车；滑轮；皮带轮
There is no bucket and pulley to this well. 那口井没有吊桶和滑车。
This allowed the oil in the nose drive to leak out around the pulley. 这允许油在要在滑车周遭渗漏的鼻子运动里。
The lifting device is a system of rope and pulley. 这种起重装置是由缆索和滑轮组成的。
Pulley bearings are frictionless. 滑轮轴承是无摩擦的。
The belt started wrapping up on the tractor pulley. 皮带开始绕在拖拉机的皮带轮上。
Attach the pulley which is held by hand with screws. 用螺丝安装皮带轮的手持部分。
