运行平稳性是机车车辆的重要指标。
Riding quality is an important index of railway vehicle running behaviour.
其结构简单可靠，运行平稳，具有密封性好、无污染。
Its structure is simple, reliable, stable operation, with good sealing, no pollution.
其结构简单可靠，运行平稳，具有密封性好、无污染。
Its structure is simple, reliable, stable operation, with good sealing, no pollution.
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