求翻译：后小车安装在小车组的后部，由车体、走轮、尾铲、导轮等几部分组成；其作用是与前小车、中小车一起组成车组，承载重物，并在停止状态时，后小车尾铲起到抬起下一组前小车前铲作用；是什么意思？

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Car after car in the rear of the group, and go round the body, and tail pulley bucket, composed of several parts, such as; its role is to small and medium-sized car Trolley, a car, carry heavy objects, and the stopped state, the rear end car lift bucket up to the next group of former car front bucke

The latter car installs in young vehicle crew's behind, by the chassis, walks the wheel, the tail shovel, the guide pulley and so on several parts is composed; Its role is with the first car, the car composes the vehicle crew together, the load bearing heavy item, and when stopped state, the latter

Car after installation in the rear of the car group, by the body, wheel, tail spade, idler pulley, as well as parts; it is composed of units with the former trolley, trolley, carrying heavy objects, and when it is stopped, car tail after scooped to lift the car before the next set of front shovel;

正在翻译，请等待...