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Pulley: in mechanics, a wheel that carries a flexible rope, cord, cable, chain, or Belt on its rim.
滑轮:力学上的一种装置,在边缘装有活动绳索、弦、缆、链条或带子的轮。
youdao
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Pulley: in mechanics, a wheel that carries a flexible rope, cord, cable, chain, or Belt on its rim.
滑轮:力学上的一种装置,在边缘装有活动绳索、弦、缆、链条或带子的轮。
youdao