Economic benefit of the reconstruction is marked. The operationaccident of coking and slagging didn't occur after transforming.
改造后经济效果明显，没有发生因结渣结焦引起运行事故。
2
The paper discusses some problems that need to be adverted to when operating the installed equipment to ensure the power supply security and prevent man-made operationaccident.
本文探讨了已设计安装好的设备在操作中确保供电安全，杜绝人为操作事故应注意的一些问题。
3
One of his eyes was injured in an accident, but after a delicate operation, he quickly recovered his sight.