求助:在API 610 5.6.15中:The rotor of one and tow stage pumps shal be designed so its first dry-bending critical speed is at least 20% above the pumps's maximum continous operating . # i6 n! h' \! _" m9 c' K1 H
' ^8 {+ s! V2 Q9 t8 ^8 K/ }- l" m) s1 v1 G
其中 first dry-bending critical speed 是指啥意思。 # Z# q! {2 s2 W3 X# U+ M) ]& y7 \( ~ 4 E% g$ \! p [3 }; V2 G 谢谢