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虽说挂车要靠牵引车将其牵引到指定区域才能作业,但用户购买汽车的目的首先是运输货物,即用户更注重的是汽车能够完成什么样的作业,所以挂车的用途是他们选择汽车的首要选项。超重型车组所用的挂车是用来专门运送一种或几种货物的列车,具有很强的专用性,一般不会运送设计外的货
Although trailers are towed to the designated area by tractor to work, the purpose of users to buy a car is firstly to transport the goods, that is, the user pays more attention to what kind of homework can be done by the car. Therefore, the purpose of the trailer is that they choose the most important car Option. The trailers used in the super-heavy car are trains that are used to transport one or several kinds of goods exclusively. They are highly specialized and generally do not carry the goods outside the design