Cu/Al bar clad material was fabricated by a drawing process and a subsequent heat treatment.During these processes,intermetallic compounds have been formed at t
Among the environmentally friendly marine energies,tidal current power plants require low cost because they do not need to construct a large dam.Tidal power is
2. The Human UnitAny investigator into the problem of variations of cultural andphysical phenomena in man will sooner or later come to the idea thatthese variat