# File lib/eymiha/units/units_hash.rb, line 30
    def to_s(numeric = 1,use_abbrevs = false)
      if size == 1 &&
          (su = select {|k,v| v == 1}).size == 1 &&
          !use_abbrevs
        su = su.to_a[0][0]
        ((numeric == 1)? su.name : su.plural).gsub(/_/,' ')
      else
        abbrevs_to_s
      end
    end