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.
分析了JZ—7电空制动系统的基本组成和作用原理，提出了在动车组加装尾部动车单独缓解功能的设计方案。
The fundamental composition and functional principles of the JZ-7 electro-pneumatic braking system are analyzed in detail.
提出了两个新概念及计算方法：缓解列车制动时车辆全部缓解后应保持的最低速度及缓解时间。
And the method of calculating the proposed two new concept vehicles are put forward: Mitigation Brake should maintain a minimum speed and release time.
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