英语单词分类 轻松记单词

pulley-block

pulley-block基本解释

滑轮组, 滑车组, 手拉吊挂

pulley-block同义词

pulley-block英英释义

Noun:
  • a simple machine consisting of a wheel with a groove in which a rope can run to change the direction or point of application of a force applied to the rope