资料来源 : pyDict

滑线变阻器

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Rheochord \Rhe"o*chord\, n. [Gr. "rei^n to flow + ??? chord.]
   (Elec.)
   A metallic wire used for regulating the resistance of a
   circuit, or varying the strength of an electric current, by
   inserting a greater or less length of it in the circuit.