Description: mean velocity, which is the stroke length multiplied by the number of complete pumping cycles of the piston, plunger or lifting rod connected to the diaphragm per minute (strokes per minute or pump crankshaft speed); Name: piston speed
Description: average speed given by the stroke length multiplied with the number of complete pumping cycles of the piston, plunger or piston attached to the diaphragm per minute (stroke per minute or pump crank speed); Name: piston velocity
Description: ten times the logarithm to the base 10 of the ratio of the sound power of a source, p, to a reference value, p0, expressed in decibels; Name: sound output level