现在解决轮断问题的的方法主要是补偿法，但该方法还无法有效解决系统同时断开大于等于三条支路的情况。

Now the main solution for the break in turn is compensation method. However, it can't solve the situations when the Numbers of circuits broken in system is more than or equal to three.

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高压法三聚氰胺装置熔融尿素升压泵运行过程发生多起断轴事故，使装置多次出现非计划停工。

The packing axle seal of the melt urea pump leaked seriously, leading to many harmful effects, so we revamped the form of axle seal.

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