Description: the result of the division from the number of failures in a given period through the period; Name: breakdown rate
Description: Number of failures within a population divided by the number of life units used by that population; Name: failure rate
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