泵不正常振动。
本文指出螺旋弹簧有偏离中心的弹性作用，是引起车辆不正常振动和摇枕纵向挡严重磨损的一个重要因素。
This paper sets forth the fact that the eccentric action of coil spring is an important factor in the causation of abnormal vibration of vehicle and severe wear on bolster guide.
如果产生不正常的温升(异常噪音、振动)，必须停车查明原因。
If there arises any abnormal temperature (unusual noises, vibration), it is necessary to stop the machine and investigate the cause.
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