It has been found that the use of triangular elements for performing an economic optimization along with a release of Angle constraint can result in even lower freight charges.
采用三角形单元体进行经济学优化，并释放角度约束，能得到更低的运输费用。
The bad release of the composite brake beam in speed increased bogies for railway freight cars is analyzed through calculation and test.
通过计算和试验，对铁路货车提速转向架组合式制动梁缓解不良问题进行了分析，提出了影响因素和改进方案。
The bad release of the composite brake beam in speed increased bogies for railway freight cars is analyzed through calculation and test.
通过计算和试验，对铁路货车提速转向架组合式制动梁缓解不良问题进行了分析，提出了影响因素和改进方案。
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