chain bucket unloader

例句：

1. 1. The chain bucket unloader was used to transport heavy materials from one location to another.
   链式装卸机被用来从一个地点运输重材料到另一个地点。
2. 2. The unloader was designed to be easy to operate and maintain, making it a popular choice for industrial use.
   卸载机设计易于操作和维护，使其成为工业使用中受欢迎的选择。
3. 3. The chain bucket unloader was used in construction sites to quickly and efficiently load and unload heavy equipment.
   在建筑工地上，链式装卸机被用来快速而有效地装载和卸载重型设备。