After the overload cycles exceed a certain number of cycles, -the overload fatigue life ratio would be decreased with the increase of overload cycles.

当超载周数超过一定值时，超载寿命比随超载周数的增加而略有减少。

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The cause of occurrence of power overload and the unstable curve of head-flow volume for low rate ratio pumps was analyzed in this paper. Some methods, then, were presented to solve the problems.

分析了低比转数离心泵出现不稳定扬程-流量特性曲线及功率过载的原因，提出了相应解决办法。

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For charges with defect, the more the void ratio, the higher the value, indicating that a higher quality charge can improve the safety of overload resist…

装药中保持一定的孔隙率可以提高装药的抗过载能力，从而说明了分步压装工艺装药密度分布对装药的抗过载安全性是有利的。

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