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freight cars短语⁶³⁴¹⁹ 基本英英例句 货车原型freightcar的复数 名词 freight car: a railway car that carries freight The working principle of spring friction draft gear for heavy haul freight cars was introduced, and a virtual prototype model of spring friction draft gear was established based on the ADAMS software. 介绍了重载货车弹簧摩擦式缓冲器的工作原理,采用 ADAMS多体动力学仿真软件搭建了弹簧摩擦式缓冲器的虚拟样机模型。 dictall |