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balancing coil

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

Autotransformer \Au`to*trans*form"er\, n. [Auto- + transformer.]
   (Elec.)
   A transformer in which part of the primary winding is used as
   a secondary winding, or vice versa; -- called also a
   {compensator} or {balancing coil}.
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