换: exchange; barter; trade极: I the utmost point; extreme器: implement; utensil; ware继电器式换极器: relay pole changer换极: change poles; pole changing变极器: inverter倒极器: transition electrode unit分极器: polarity splitter去极器: depolariser; depolarzer同极器: homopolar转极器: pole changer换极式: pole change type ac generator臂板转极器: pole changer operated by semaphore单极器件: unipolar device电池变极器: b / i battery inverter脉冲分极器: pulsator classifier双极器件: bipolar device转极器,换向器: pole changement电池换极: battery reversal换极电动机: pole change motor; pole-change motor换极继电器: pole changing relay; pole-changing relay换极开关: polarity reversing switch; pole changer switch; pole changing switch; pole reverser; pole-changing switch换极连续波: anodic-cathodic wave; anodic-cathodio wave换极马达: pole changing motor换极起动器: pole changing starter
