In this model,the tramcar was regarded as two degrees of freedom spring-mass-damper system,and the track was regarded as Bernoulli-Euler beam that locates on continuous and elastic ballast.是什么意思_In this model,the tramcar was regarded as two degrees of freedom spring-mass-damper system,and the track was regarded as Bernoulli-Euler beam that locates on continuous and elastic ballast.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句