Description: pump power output divided by the pump power input; Name: efficiency (pump)
Description: proportion of the pump power input, p, delivered as pump power output, pu, at given operating conditions; Name: pump efficiency
Description: translation i of a pair of gears or a multiple gear pair is the ratio of the angle speed wa (or the speed na) of the first driving wheel to that of the last driven wheel wb (or nb); Name: Transmission ratio of the transmission