pulley-block的翻译
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. 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