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rheostat n. 可變電阻器 可變電阻器 rheostat n 1: resistor for regulating current [synonym: {rheostat}, {variable resistor}] Rheostat \Rhe"o*stat\ (r[=e]"[-o]*st[a^]t), n. [Gr. "rei^n
stato`s standing still.] (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. [1913 Webster]
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