pulley-block

1. Slide block universal radial drilling machine pulley-block luffing gear
   滑座式万向摇臂钻床（起重机）升降支臂用滑轮组
2. Lifting pulley-block inclination analysis and its remedy
   起重滑轮组倾斜问题的分析与解决
3. Application of Windlasses and Pulley-block in Boiler Drum Installation
   卷扬机滑轮组系统在锅炉汽包吊装中的应用

noun

1. 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

   Synonym:    pulleypulley blockblock