safety gear block 安全钳座
triple-gear block 三联齿轮
double-gear block 双联齿轮
three-gear block 三联齿轮
reverse gear block 倒车齿轮组
slider block gear 滑动器块齿轮
brake block adjusting gear 制动器闸瓦调整装置
pulley-block luffing gear 升降支臂用滑轮组
gear sliding block 两联滑动齿轮
double-gear sliding block 两联滑动齿轮
应用推荐