#mechanical_system  a system of elements that interact on mechanical principles
  supertype:  system.instrumentality__unit  instrumentality that combines interrelated interacting artifacts designed to work as a coherent entity; "he bought a new stereo system"; "the unit consists of a motor and a small computer"
  subtype:  fuel_injection_system__fuel_injection  mechanical system to inject atomized fuel directly into the cylinders of an internal-combustion engine; avoids the need for a carburetor
  subtype:  linkage.mechanical_system  a mechanical system of rods or springs or pivots that transmits power or motion
  subtype:  pressure-feed_lubricating_system__lubricating_system__lubricatingsystem__force-feed_lubricating_system__force_feed__forcefeed__pressure_feed  mechanical system of lubricating internal combustion engines in which a pump forces oil into the engine bearings
  subtype:  production_line__assembly_line__line  mechanical system in a factory whereby an article is conveyed through sites at which successive operations are performed on it
  subtype:  suspension_system__suspension  a mechanical system of springs or shock absorbers connecting the wheels and axles to the chassis of a wheeled vehicle
  subtype:  ventilation_system__ventilationsystem__ventilating_system__ventilatingsystem  a mechanical system in a building that provides fresh air; "she was continually adjusting the ventilation"

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