The designed technical parameters, structural characteristics, dynamics calculation and test analysis of the PW 200 type bogies are described.

介绍了PW—200型转向架设计技术参数、结构特点、动力学计算和试验分析。

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The structural characteristics of the swing type freight car bogies are described, and the basic principles of the swing type bogies are expounded;

介绍了货车摆动式转向架的结构特点，阐述了摆动式转向架的基本原理；

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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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