Please input the actual inspection date and only the beginning date will be shown the certificate.

请输入实际检验日期,只有起始检验日期会出现在证书上.

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This paper begins with the actual inspection and repair for long and big cargo freight cars.

介绍了我国长大货物车的发展历程、结构特点,展望了长大货物车的技术发展前景.

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