Excessiveexternalpressuremayleadtocollapseofthepipe.Collapseusuallyinvolvesflatteningofthepipewhichimpedestheflowthroughit.However,thisisnotconsideredtobeacriticalfailuremodesincethedesigndepthisusuallywelldefined.Thisisalsoreflectedindesignrecommendation (共 4139 字) [阅读本文] >>