motorization
  動力化,摩託化
  Mo·tor·ize v. t.
  1. To substitute motor-driven vehicles, or automobiles, for the horses and horse-drawn vehicles of (a fire department, city, etc.). [archaic] -- Mo*tor*i*za*tion n.
  ◄ ►
  motorization
       n : the act of motorizing (equiping with motors or with motor
           vehicles) [syn: motorisation]