Since the midst motor coach of Shanghai URT Line 1 Expansion Project has to be transported by railway, its necessary to design an interface box as the substitute of A-car.
上海轨道交通1号线扩编项目的中间动车需要由铁路运输完成，因此需要设计运输接口箱以代替A车功能。
Since the midst motor coach of Shanghai URT Line 1 Expansion Project has to be transported by railway, its necessary to design an interface box as the substitute of A-car.
上海轨道交通1号线扩编项目的中间动车需要由铁路运输完成，因此需要设计运输接口箱以代替A车功能。
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