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。
Based on the knowledge of mechanical theory, a way for the field determination and calculation of the main parameters of involutes gears was presented.
介绍了工程技术人员在现场条件下，利用所学机械理论知识，对渐开线齿轮的主要参数进行测量和计算的一种方法。
Briefly described are the structure, main technical parameters and strength analysis calculation of the low-side flat car.
简要介绍了低边平车的结构、主要技术参数和强度分析计算情况。
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