a system of ropes and pulleys绳索滑轮系统Levers and pulleys are simple machines.杠杆和滑轮是简单机械.Among them were rickshaw pulleys, peddlers, policemen and servants.这些人有的拉车,有的做小买卖, 有的当巡警,有的当仆人....

pulley的复数形式为：pulleys...

n.滑轮（组），滑车，皮带轮v.用滑轮升起，用滑车推动，给…装滑车...

pulley的音标：pulley的英式发音音标为：['pʊli]pulley的美式发音音标为：['pʊli]...

Block and tackle: Combination of pulleys with rope or cable, commonly used to augment pulling force.滑轮和滑车组: 带绳索和缆绳的滑轮组, 通常用于增大拉力.Levers and pulleys are simple machines.杠杆和滑轮是简单机械.Among them were rickshaw pulleys, peddler...

pulleys的音标：...

n.滑轮（组），滑车( pulley的名词复数 )，皮带轮...

The stone was lifted by means of a rope and pulley.这块大石是用绳子和滑轮给吊起来的.The worker threaded the wire through the pulley.工人把金属丝穿在滑轮上.The weights are moved via a cable and pulley system.重物通过缆绳和滑轮系统运送。...

Place Taper - lock Bushing and Timing Belt Pulley on the transmission shaft.将锥面紧固套与同步带轮装在传动轮上.The worker threaded the wire through the pulley.工人把金属丝穿在滑轮上.The stone was lifted by means of a rope and pulley.这块大石是用绳子和滑轮给吊起来...