rheo·stat /ˈriəˌstæt/
  可變電阻器
  rheo·stat /ˈrɪəˌstæt/ 名詞
  Rhe·o·stat n.  Elec. A contrivance for adjusting or regulating the strength of electrical currents, operating usually by the intercalation of resistance which can be varied at will. --Wheatstone. --Rhe*o*stat*ic a.
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  rheostat
       n : resistor for regulating current [syn: variable resistor]