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用气体动力学原理建立模型，预测了列车不同编组长度、不同减压量后的缓解性能。预测结果表明：列车的经解性能与列车的编组长度及减压量有关，列车越长缓解波速越慢；减压量越大，缓解波速越快；缓解波按非等速由前向后传播。
The model was established with the principle of gas dynamics and the mitigation performance of different train lengths and pressure reductions was predicted. The prediction results show that the performance of the train is related to the length of the train and the amount of decompression. The longer the train is, the slower the wave speed is. The greater the decompression amount is, the faster the wave speed is relieved. .