滑轮 滑车 皮带轮英释
a system of ropes and pulleys.绳索滑轮系统
belt pulley,皮带轮；皮带盘
guide pulley,导向轮；压带轮
pulley block,滑轮组
motor pulley,电动机皮带轮
crank pulley,曲轴皮带轮
