Component detection must be carried out when abnormal detection occurs and the safety confirmation of the used replacement medium is conducted at the same time.
出现检测异常时必须进行成分检测，同时对采用的置换介质进行安全确认。
2
The reasons include inappropriate maintenance, component failures, filter blockage, bad crankshaft bearing shells, inappropriate fit clearances, abnormal diesel engine vibration and etc.
烧损原因包括保养不当、部件故障、滤清器堵塞、轴瓦质量不高、配合间隙不合适以及柴油机异常振动等。
3
The distribution of sample plots and the detection of abnormal sample plots in monitoring area are studied by means of principal component analysis according to these factors.