Unloose the waste paper-box and place them on the dumpcart, send them to the garbage room at all times.

将垃圾纸箱放置于垃圾车上，一直把它们送到垃圾房里去。

In design and the calculation part, the structure parameter of the garbage truck, and the engine of the dumpcart are chosen according with the requirements.

在设计计算部分，根据设计要求确定了垃圾车的结构参数，并根据结构参数对垃圾车的发动机进行了选型。