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pulley block

/ˈpʊli blɒk/

翻译: 一种机械装置,由一个带槽的轮子构成,绳子或缆索绕在槽中,用于通过改变力的方向来提升重物。

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phrase

/ˈpʊli blɒk/C1formaltechnical
  • zh一种机械装置,由一个带槽的轮子构成,绳子或缆索绕在槽中,用于通过改变力的方向来提升重物。

A mechanical device consisting of a wheel with a groove for a rope or cable, used to lift heavy loads by changing the direction of force.

  1. Mechanical deviceC1formal

    A pulley block is a system of one or more pulleys mounted in a single frame, used to lift heavy loads by changing the direction of force.

    zh机械装置

    • The workers used a pulley block to lift the steel beams onto the roof.
    • A pulley block system can reduce the effort needed to raise heavy objects.
    • The ship's rigging included several pulley blocks for hoisting sails.