• Double-stack container trains are the new railway products which can increase transport capacity with higher speed and lower unit operating cost.

    铁路双层集装箱运输运输速度快、运输费用省、单位运营成本使运能提高铁路货运产品

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  • On the basis of Social Economic Engine Model (SEEM), this paper proposes the utility function of economic unit regarding to the speed of economic increase and surplus first.

    社会经济发动机模型SEEM基础上提出了经济主体对于经济增长速度经济剩余效用函数

    youdao

  • On the basis of Social Economic Engine Model (SEEM), this paper proposes the utility function of economic unit regarding to the speed of economic increase and surplus first.

    社会经济发动机模型SEEM基础上提出了经济主体对于经济增长速度经济剩余效用函数

    youdao

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