#technology__engineering  the practical application of science to commerce or industry
  supertype:  #practical_application  #profession
  subtype:  #aeronautical_engineering  the activity of designing and constructing aircraft
  subtype:  #automotive_technology__automotive_engineering  the activity of designing and constructing automobiles
  subtype:  #chemical_engineering  the activity of applying chemistry to the solution of practical problems
  subtype:  #communications_technology  the activity of designing and constructing and maintaining communication systems
     subtype:  #digital_communications_technology  the design and construction of communications technology that transmits information in digital form
  subtype:  #computer_technology  the activity of designing and constructing and programming computers
  subtype:  #rail_technology__railroading  the activity of designing and constructing and operating railroads
     subtype:  #magnetic_levitation  high-speed rail technology; train is suspended on a magnetic cushion above a magnetized track and so travels free of friction

No statement uses or specializes #technology; click here to add one.