Description: Period of time in which an object is in external disturbance; Name: external disruption time
Description: time interval throughout which an item is in an external disabled state; Name: external disabled time
Description: Speed that characterizes a pump in terms of its speed, flow rate per impeller eye, i.e. total flow for single-flow impeller, half flow for double-flow impeller, at the best efficiency point and head per stage at maximum impeller diameter ; Name: Specific speed