Charts shown in Figures 8, 9 and 10 can be used for judging the posibility of occureance and the type of vortices at the entrance with a similar Froude number.

• 提供的曲线图8、9和10可用以判别具有类似佛劳德数的进水口在运行时可能产生漩涡的条件以及类型;