Generating Inbred Mice. Inbred Strains. A strain is defined as inbred when it has been mated brother x sister for 20 or more consecutive generations (F20). All offspring can be traced back to a single ancestral breeding pair in the 20th or subsequent generation.
suction head. The energy per unit weight of fluid on the suction side of a pump. 1  Facebook.
Hydraulic head or piezometric head is a specific measurement of liquid pressure above a geodetic datum. It is usually measured as a liquid surface elevation, expressed in units of length, at the entrance (or bottom) of a piezometer.