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#earthbondhon #EEEstudy #EEE #EB #transformer #delta #transformers #delta_dental #dentist #delta_airlines #electrical_transformer #single_phase_transformer #step_up_transformer #auto_transformer #3_idiots_transformer #3_phase_transformer_connection #3_phase_transformer_winding #3_phase_transformer_open_circuit_testКомментарии: