求翻译：以国电常州发电有限公司机组为例，针对600MW机组直流锅炉，介绍在燃用与设计煤种偏差较大的低热值原煤时，在RUNBACK工况下出现的异常现象，提出事故处理的方法，以保证机组的安全运行。是什么意思？

State Power Changzhou power generation unit, for example, for 600mw crew Boiler, introduced in the larger to the deviation of the design coal of low calorific value of raw coal burning, anomalies appear in the runback conditions proposed to deal with the accident to ensure the safe operation of the

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Generates electricity the limited company unit take international telegram Changzhou as the example, in view of the 600MW unit concurrent boiler, introduced when burns with with designs the coal plants the deviation great low heat value raw coal, under the RUNBACK operating mode appears the abnormal

Guodian Changzhou power plant units, for example, for 600MW unit once-through boiler, described in coal burning and design deviations larger when the low calorific value of coal, anomalies that occur under RUNBACK, proposed treatment methods, to ensure the safe operation of the unit.