pulley-block 详细解释

pulley-block

滑轮组, 滑车组, 手拉吊挂

词形变化

名词复数: pulleys |

英英释义

名词 pulley-block:

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

同义词:pulley, block