Due to the changeofoil composition, there are lots of problems about combustion now in oil fired boiler.
由于锅炉燃料的改变，锅炉油喷嘴不能适应新情况，经常出现燃烧方面的故障。
2
The former method of forecasting and analysis for changeofoil pressure at time of build up in closed well can not foresee stable time and oil pressure accurately.
以往对关井恢复中油压的变化趋势预测和分析的方法，不能准确预测油压稳定时间以及稳定油压。
3
The results show that the changeofoil-film whirl angle makes the characteristics of journal bearing change greatly, and the more the whirl radius is, the more the influence is.