pulley

滑轮，滑车，皮带轮英释nna piece of equipment consisting of a wheel over which a rope or chain is pulled to lift heavy things

1 belt pulley,皮带轮；皮带盘

2 guide pulley,导向轮；压带轮

3 pulley block,滑轮组

4 motor pulley,电动机皮带轮

5 crank pulley,曲轴皮带轮

1 a system of ropes and pulleys.绳索滑轮系统