同义词
1)direct axis transient impedance,直轴瞬变阻抗2)direct axis subtransient impedance,直轴超瞬变阻抗3)direct axis subtransient impedance,直轴次瞬变阻抗4)direct-axis subtransient impedance,直轴次暂态阻抗，直轴次瞬变阻抗5)direct-axis transient impedance,直轴暂态阻抗，直轴瞬变阻抗6)direct-axis transient impedance,直轴瞬态阻抗
