#crystal.component  a crystalline element used as a component in various electronic devices
  supertype:  component__constituent  an artifact that is one of the individual parts of which a composite entity is made up; especially a part that can be separated from or attached to a system: "spare components for cars"; "a component or constituent element of a system"
  part of:  crystal_counter  crystal_detector  crystal_microphone  crystal_pickup
  subtype:  piezoelectric_crystal__piezoelectriccrystal  a crystal that can be used as a transducer

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