#tesla  a unit of magnetic flux density equal to one weber per square meter
  supertype:  #flux_density_unit  a measure of the amount of flux per unit of cross sectional area
  part:  #gauss__gaus  a unit of magnetic flux density equal to 1 maxwell per square centimeter
     part:  #microgauss  a unit of magnetic flux density equal to one millionth of a gauss

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