drag bar conveyer

例句：

1. 1. The drag bar conveyeris used to transport heavy materials efficiently.
   拖拉式输送带用于高效地运输重材料。
2. 2. The pulley conveyor is acommon equipment in factories for moving heavyloads.
   滑轮输送带是工厂中常见的设备，用于移动重物。
3. 3. The pulley belt conveyor is widely used inthe transportation of bulk goods.
   滑轮皮带输送机广泛用于大宗货物的运输。