Having analyzed the society requirement and development target, we discussed the technical plan for the machine tools, both on software and hardware.

在分析社会需求和研制目标的基础上，讨论了机床的软硬件技术方案。

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Described are the development target, main technical features and parameters, main structure, finite element calculation results and testing of the 4d-axle welding frame type bogies.

介绍了4d轴焊接构架式转向架的研制目标、主要技术特点和参数、主要结构、有限元计算结果及试验情况。

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Described are the development target, main technical features and parameters, main structure, finite element calculation results and testing of the 4d-axle welding frame type bogies.

介绍了4d轴焊接构架式转向架的研制目标、主要技术特点和参数、主要结构、有限元计算结果及试验情况。

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