pulley block
pulley block是什么意思、pulley block怎么读
滑轮组\n【化】 滑轮组
pulley block汉语翻译
滑轮组<br>【化】 滑轮组
pulley block英语解释
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, pulley-block, block