1. The dump in a mine is divided into five steps. The size of the mullock in the dump varies. The internal crevice of the dump is quite big. 某矿山排土场共分五阶，其废石颗粒大小不一，内部空隙比较大，稳定性比较差。
2. A rotary mechanism for multi-angle skip bucket of dump truck is designed. Goods is lifted and dumped by hydraulic system in the dump track. 设计了一种可多角度倾卸货物的自卸车车厢旋转机构，利用液压系统实现对货物的举升和倾卸。
3. A rotary mechanism for multi-angle skip bucket of dump truck is designed. Goods is lifted and dumped by hydraulic system in the dump track. 设计了一种可多角度倾卸货物的自卸车车厢旋转机构，利用液压系统实现对货物的举升和倾卸。
4. A dump truck full of dirt will go with the cement truck. 一辆装满废土的砂土车将会跟著混凝土预拌车。
5. A dump truck full of dirt will go with the cement truck. 一辆装满废土的砂土车将会跟著混凝土预拌车。
