But when surcharge preloaded, the coefficient will change with the overload ratio and its duration time.
而当超载预压处理后，次固结系数随超载比和超载作用时间不同而变化。
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。
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。
应用推荐