Description: specific design within a type, generally characterized by its dimensions, a design may include several designs (variants), generally differing in mechanical details; Name: constr (impeller)
Description: a specific design within the context of a type, which is generally characterized by its dimensions. A construction can comprise several design (variants), which generally vary in terms of mechanical details; Name: Construction of the transmission
Description: difference between the total head at the outlet side of the installation and the total head at the inlet side of the installation; Name: installation total head